First Principles of Performance Part IV

The Volume Spectrum

Understanding Maintenance Volume (MV), Minimum Effective Volume (MEV), Maximum Adaptive Volume (MAV), Maximum Recoverable Volume (MRV), and Everything Between

Growth is determined not by how much work you perform, but by how much productive work you can recover from.

Introduction

Walk into almost any Olympic Weightlifting or power lifting gym, CrossFit affiliate, or even the standard Globo gym and you’ll eventually encounter two seemingly opposite philosophies.

One athlete believes progress comes from doing more: more sets, more repetitions, more accessory work, more conditioning, more training days. If some novel amount of work produces results, even more work should produce even better results.

Another takes almost the opposite approach: do as little as necessary to stimulate improvement, then get out and recover.

Curiously, both can point to successful athletes who appear to prove them right.

One can point to the CrossFit athlete training multiple sessions a day, the weightlifter accumulating hundreds of technically demanding repetitions each week, or the bodybuilder thriving on German high volume training. Then another points to an elite powerlifter progressing on surprisingly few max-effort lifts, or an experienced weightlifter whose training becomes more productive after unnecessary volume is removed.

So which approach is correct? Both and neither. Why? Because the question itself is flawed.

The body does not respond to volume in absolute terms. It responds to recoverable stress.

That distinction changes everything.

The objective of training is not to perform the greatest amount of work possible. It is to perform the greatest amount of productive work possible: enough to create the desired adaptation without accumulating so much fatigue that additional work stops contributing meaningfully to it.

There is a difference between training that challenges your capacity and training that simply consumes it.

Understanding where that line exists, and recognizing that it shifts according to the athlete, the adaptation being pursued, the type of training being performed, and where the athlete is in their development, is one of the most valuable skills an athlete or coach can develop.

This is where the Volume Spectrum begins.

More Is Better, Until It Isn’t

One of the oldest assumptions in strength training is beautifully simple: if ten sets build muscle, twenty must build even more. And if twenty works, why not thirty?

The problem is that biological markers rarely, like life, move in straight lines.

The human body is governed by diminishing returns. Initially, increasing training volume can produce greater adaptation. Strength improves, muscle grows, work capacity increases, and technique becomes more refined. But eventually those returns begin to diminish. Progress slows, then plateaus, and if volume continues increasing without sufficient recovery, performance can begin moving backward.

More work has become less productive.

The irony is that many dedicated athletes interpret this decline exactly backward. Feeling stalled, they assume they simply need to work harder, so they add another exercise, another set, another conditioning session, another “finisher.”

Instead of solving the problem, they’ve increased the very stress that caused it.

The Volume Spectrum

Training volume can be understood through four useful landmarks along a continuum. These should not be treated as rigid physiological thresholds or universal numerical prescriptions, but as practical regions that help coaches think about the relationship between training stress and adaptation.

Quick Reference: Training Volume Landmarks

MV (Maintenance Volume): The minimum amount of training needed to maintain current performance and muscle mass. Used during periods of reduced training, deloads, or recovery phases.

MEV (Minimum Effective Volume): The lowest training dose that produces measurable progress or adaptation. Anything below this threshold will not drive improvement.

MAV (Maximum Adaptive Volume): The “sweet spot” where training volume is high enough to maximize gains without causing excess fatigue or risk of overtraining. This is where most productive training occurs.

MRV (Maximum Recoverable Volume): The upper limit of training volume that the body can adapt to and recover from. Exceeding this consistently leads to stagnation, regression, or injury.

In short:

  • MV: Enough to maintain, not improve.
  • MEV: The minimum to make progress.
  • MAV: The most productive range for gains.
  • MRV: The most you can recover from, not to be exceeded.

Maintenance Volume (MV)

Maintenance Volume is exactly what it sounds like: the minimum amount of work required to preserve a current level of adaptation.

Notice what it is not. Maintenance volume is not intended to produce meaningful improvement. It provides enough stimulus to prevent meaningful loss.

This matters more than many athletes realize because maintenance allows training resources to be reallocated. A competitive CrossFit athlete may temporarily reduce upper-body hypertrophy work while emphasizing Olympic lifting. A tactical professional preparing for selection may maintain maximal strength while substantially increasing endurance. An older adult may temporarily reduce overall workload while attempting to preserve existing strength and muscle mass.

Maintaining an adaptation generally requires less training than developing it in the first place. That principle becomes one of the coach’s most valuable tools because no athlete can emphasize everything simultaneously.

Sometimes maintaining one quality is precisely what allows another to improve.

Minimum Effective Volume (MEV)

MEV represents the lowest amount of training necessary to produce measurable improvement. Think of it as crossing the threshold where training moves beyond maintenance and begins providing enough stimulus for further adaptation.

Importantly, MEV is highly individual.

A novice lifter may stimulate meaningful progress with relatively little training. An experienced athlete may require substantially more work simply to continue improving. Training age changes the equation because the stronger, more conditioned, and more experienced you become, the greater the stimulus may need to be before the body has sufficient reason to adapt further.

Success changes the rules.

Maximum Adaptive Volume (MAV)

Maximum Adaptive Volume describes the region where training produces the greatest return relative to the fatigue it creates.

Not necessarily the most work. The best work you can do, achieving the intended stimulus, and recover from.

Most productive training should occur somewhere in this range. Performance improves, strength or work capacity develops, recovery remains manageable, technique stays relatively sharp, and the athlete remains capable of continuing to perform quality training.

That distinction matters. MAV is not defined by exhaustion, it’s defined by adaptation.

Maximum Recoverable Volume (MRV)

Eventually every athlete reaches a point where additional work creates more fatigue than useful adaptation. That upper boundary is Maximum Recoverable Volume.

MRV should not be treated as a target. It’s the ceiling.

Experienced athletes may intentionally approach that ceiling during concentrated training blocks before reducing workload and allowing accumulated fatigue to dissipate. Used carefully, periods of functional overreaching can have a place within training.

Living near or above MRV is another matter.

When training chronically exceeds the athlete’s ability to recover, familiar warning signs can begin appearing: declining performance, slower bar speed, persistent soreness or joint discomfort, deteriorating sleep, reduced motivation, worsening session quality, and increased susceptibility to minor illness.

The dedicated athlete may again interpret these symptoms as evidence that more work is required. Often the opposite is true.

Why These Landmarks Move

One of the biggest mistakes coaches make is treating volume landmarks as fixed numbers.

They aren’t.

Your MEV this year may not resemble your MEV five years from now. Your MRV during a period of low life stress may differ considerably from your MRV during a demanding work cycle, caloric deficit, competition season, or period of poor sleep. The amount of volume you can recover from for one physical quality may also differ substantially from what you can tolerate for another.

These landmarks move because the athlete moves. As the old saying goes, “You can’t be in fight shape all the time.

Training Age

Beginners often require surprisingly little work to improve. Advanced athletes generally require a greater stimulus to continue adapting, while simultaneously becoming capable of creating considerably more stress during each hard working set.

Five sets of squats performed by an athlete squatting 135 pounds do not represent the same physiological event as five sets performed by an athlete squatting 500.

The volume may look identical on paper. The affect on the body is not.

Exercise Selection and Recovery Cost

Not all training stress is created equally.

Three sets of leg extensions, three sets of heavy back squats, three rounds of ring muscle-ups, ten minutes of EMOM barbell cycling, and a 5k row for time all qualify as training volume, but they do not impose the same demand.

Heavy compound lifting can create substantial mechanical and systemic fatigue. High-repetition gymnastics challenge local muscular endurance, connective tissue, grip, coordination, and the ability to maintain movement quality as fatigue (neurological and physical) accumulates.

Repeated cleans or snatches performed under metabolic fatigue combine muscular endurance with technical proficiency, strength, power, timing, and repeated force production. Longer aerobic work may create relatively little mechanical damage while still imposing substantial cardiorespiratory and metabolic demand.

This is why simply counting sets, repetitions, minutes, or meters can become misleading.

Programming volume requires understanding what quality the work is developing, how much useful stimulus it provides, and what it costs the athlete to recover from it.

The body doesn’t count reps, it accumulates stress.

Different Qualities Carry Different Costs

One of the greatest misconceptions in training is assuming every physical quality responds to volume in the same way.

It doesn’t.

Absolute strength and power require exposure to high levels of force and velocity. A strong baseline in movements such as squats, deadlifts, presses, pulls, and Olympic lifts provide a foundation from which explosive force can be expressed.

Muscular endurance requires something different: the local capacity of muscles and the nervous system controlling them to repeatedly produce useful contractions despite accumulating fatigue. In gymnastics, that may mean sustaining pull-ups, push-ups, toes-to-bar, handstand push-ups, or muscle-ups. With a barbell, it may mean repeatedly cycling cleans, snatches, thrusters, or shoulder-to-overhead movements while maintaining enough technical integrity to continue working efficiently.

Cardiorespiratory endurance and stamina place another demand on the athlete. Aerobic and anaerobic metabolism must continually provide energy across efforts lasting seconds, minutes, or hours, while the athlete develops the capacity to sustain output and recover between repeated demands.

Strength, power, muscular endurance, barbell endurance, cardiorespiratory endurance, and stamina coexist, but they are not interchangeable.

A CrossFit athlete preparing for competition may intentionally increase muscular endurance, barbell cycling, aerobic development, and repeated-effort aerobic power and capacity training while maintaining rather than maximizing absolute strength.

An Olympic weightlifter may do almost the opposite, allocating considerably more training toward strength, power, technical consistency, and the competition lifts. A tactical professional may require substantial strength alongside loaded movement, cardiorespiratory endurance, muscular stamina, and repeated performance under fatigue.

An older adult may prioritize strength, muscle mass, aerobic capacity, mobility, balance, and resilience because the objective is preserving capability and independence rather than maximizing competitive performance.

None of these athletes are training incorrectly, they’re simply solving different problems. Volume only becomes meaningful when viewed through the adaptation being pursued.

Movement Quality Changes the Cost of Volume

There is another variable that sets and repetitions alone cannot explain: movement quality.

Before deciding that an athlete needs more squats, gymnastics, barbell work, or conditioning, the coach must understand whether the athlete can efficiently perform the movements being prescribed.

Can they squat through the required range of motion while maintaining position? Can they establish a stable overhead position and safely receive a clean or snatch? Do they possess the ankle, hip, thoracic, and shoulder mobility required for the task? Can they maintain trunk control and coordination as fatigue accumulates?

Flexibility and mobility are not decorative qualities simply sprinkled in at the beginning or at the end of a training session. Adequate range of motion allows the athlete to access the positions required for the task(s); mobility adds the ability to control those positions. Coordination, agility, and balance allow the athlete to organize movement, redirect force, transition between tasks, and preserve technical integrity under changing conditions.

These qualities are essential and non-negotiable under fatigue.

Walking on your hands while fresh is one skill. Maintaining a handstand walk after heavy cleans and/or several minutes of high-output conditioning is another. The same principle applies to receiving a snatch in a deep overhead squat, transitioning efficiently through ring muscle-ups, or maintaining clean mechanics while breathing heavily and losing grip strength.

Poor movement quality increases the cost of work. Efficient movement reduces it.

Two athletes can therefore complete exactly the same prescribed volume while experiencing meaningfully different training loads.

Sometimes the fastest way to improve work capacity isn’t adding more work.

It’s reducing wasted movement. Or, what we used refer to in CrossFit as seeking Virtuosity in movement.

Volume Exists in Time

Twenty weekly sets performed in one session are not equivalent to twenty sets distributed across four sessions.

Fatigue accumulates differently. Performance quality changes. Recovery opportunities change.

The same principle applies outside traditional resistance training. Twenty minutes of high-skill gymnastics performed while fresh is not equivalent to twenty minutes performed after heavy barbell work. Six sprint intervals distributed appropriately across a training week do not necessarily impose the same cost as those same intervals performed immediately after a demanding lower-body session.

Volume therefore cannot be separated from frequency, sequencing, and recovery. Where the work occurs matters, what happens before and after it matters. The body does not simply experience training volume. It experiences stress over time.

The Athlete Changes the Equation

Dynamis 

Genetics, sleep, nutrition, age, life stress, occupation, training history, and movement quality all influence the amount and type of training an athlete can productively tolerate.

A firefighter working rotating night shifts may have a very different MRV from a college student sleeping nine hours each night. Two athletes possessing similar strength may tolerate very different amounts of training, and two athletes capable of completing the same workout may require entirely different interventions because their limiting factors are different.

One may lack absolute strength. Another may lack muscular endurance. Another may possess tremendous strength but poor muscular endurance. Another may have excellent local muscular endurance but insufficient aerobic capacity to recover between efforts. Another may simply move inefficiently which can make each training session twice as hard as it needs to be with the most basic of movements like air squats, pushups, pullups or burpees.

That’s why programming that ignores recovery outside the gym ignores half the equation.

And programming that ignores the individual misunderstands the other half.

Autoregulation: Listening Without Guessing

Perhaps the greatest weakness of rigid programming is the assumption that today’s body is identical to yesterday’s.

It isn’t.

Autoregulation recognizes that readiness fluctuates. Instead of blindly completing predetermined workloads regardless of performance, intelligent athletes and coaches adjust training according to relevant objective and subjective information.

Bar speed, repetitions in reserve, perceived exertion, heart-rate recovery, sleep quality, motivation, persistent soreness, session performance, movement quality, and technical deterioration under fatigue can all provide useful information.

No single metric tells the entire story. The purpose is not to replace programming with daily improvisation.

Autoregulation isn’t abandoning structure it’s allowing physiology to inform execution.

Deloads: Adaptation’s Forgotten Partner

One of the greatest misconceptions in training is that progress results from uninterrupted accumulation. It doesn’t. Progress often depends upon strategic reduction.

Deloads intentionally reduce training stress so accumulated fatigue can dissipate while much of the underlying adaptation is preserved. The purpose isn’t simply to rest. It is to restore the athlete’s capacity to perform productive training again.

A deload is not necessarily a step backward. Often it is the point at which accumulated fitness becomes visible beneath accumulated fatigue. We’ll discuss deloading, and its importance in more detail, later in this series

Pacing, Bottlenecks, and Productive Volume

More volume is rarely the solution to poor performance.

Sometimes the athlete needs more strength. Sometimes they need greater muscular endurance, a larger aerobic base, better gymnastic skill, more technical practice, or improved movement economy.

And sometimes they simply need to stop going out too hard. Pacing by itself is a performance skill. Athletes have to learn how much work can be performed now without any degradation in overall performance.

That means learning how quickly your breathing recovers, knowing when to stop just before grip or shoulder failure, or when technically efficient barbell cycling becomes increasingly expensive, and where local muscular fatigue or technical breakdown reliably appears.

Meaning, where is the bottleneck?

An athlete who repeatedly falls apart during the final five minutes of a 20min AMRAP, may not need another conditioning session. They may benefit more from not trying to win the first five minutes.

Likewise, an athlete struggling with high-repetition cleans may assume the problem is conditioning when insufficient absolute strength is making every repetition too expensive. Another athlete may possess enormous strength but lose time because poor economy of motion makes their receiving positions inefficient. Another may possess the engine and strength but lack the coordination required to transition efficiently between gymnastics and other external loading.

The workout reveals the symptom(s) and good assessments identify the cause(s). That distinction matters because training should target the bottleneck, not just accumulate more fatigue around it.

Volume Is a Conversation, Not a Competition

Perhaps the most important lesson from the Volume Spectrum is this: Volume is not something to maximize, it’s something to be optimized.

It’s a training resource to be allocated according to the athlete’s objectives, abilities, limitations, and capacity to recover. The strongest programs are rarely those that demand the most work. They are the ones that consistently produce the greatest useful adaptation relative to their cost.

That balance changes throughout a career. It changes across seasons and according to the physical quality being developed. It changes during periods of occupational stress, poor sleep, illness, caloric restriction, or competition preparation. And it changes as weaknesses become strengths and new bottlenecks emerge.

The best coaches therefore don’t ask: How much volume can this athlete survive?

They ask: How much productive volume can this athlete recover from?

And eventually, they ask an even better question: Where should that volume be spent?

Those are profoundly different questions. One measures work while the other considers adaptation. And that final question brings us to the next principle.

Looking Ahead

By now, we’ve moved far beyond the old argument that strength and conditioning somehow exist in opposition to one another.

We’ve seen that the interference effect is real but contextual. We’ve examined what performance programs actually look like and why athletes with very different objectives still develop many of the same fundamental physical qualities. And now we’ve established that even the amount of training itself exists along a spectrum, from the work required merely to maintain an adaptation to the upper boundary of what the athlete can productively recover from.

But volume alone still cannot tell us what to do.

Knowing that an athlete can recover from twelve hours of training each week tells us nothing about how those twelve hours should be spent.

Should we build absolute strength and power? Develop muscular endurance or barbell cycling skill? Expand cardiorespiratory capacity? Improve flexibility and movement efficiency? Develop coordination, agility, and balance? Improve movement quality or technical skill? Practice pacing? Attack a specific bottleneck?

Or should several of those qualities simply be maintained while training resources are concentrated on the one that matters most right now?

That is where coaching becomes something more than exercise selection.

A bodybuilder, Olympic weightlifter, tactical professional, CrossFit athlete, and older adult may all require some combination of strength, endurance, power, movement competency, and resilience.

But their needs vary in degree and application, not in kind. What changes is the proportion.

What changes is the priority. What also changes is the organization of stress across time.

Good programming does not ask which physical quality is universally best. It asks which quality matters most for this athlete, at this moment, how much of the others must be developed or preserved, where the athlete’s bottlenecks exist, and how those pieces can coexist without obscuring the primary objective.

That is why programming cannot be reduced to exercises written beneath the days of the week, and it certainly isn’t the random accumulation of difficult workouts.

Programming is the deliberate organization of stress in pursuit of adaptation.

It determines what to develop, what to maintain, what to temporarily deprioritize, how much work to perform, when to perform it, when to push, when to pull back, and when the athlete standing in front of you requires something different from what you originally wrote on paper.

In Part V of First Principles of Performance we discover how programming is not the science of writing workouts. It’s the strategic art of organizing adaptation, we bring those pieces together and examine how coaches actually organize adaptation: how strength, power, muscular endurance, cardiorespiratory capacity, movement competency, skill, recovery, and the individual athlete become a coherent training system rather than a collection of disconnected workouts.

Because knowing the physiology is important, knowing the how and why we utilize MGW is foundational, and how and why knowing all of the movements is elemental. But, knowing how to organize them around the needs of the individual is where knowledge becomes art.

Programming is not simply the science of writing workouts. It is the art of organizing adaptation. As always, the principles remain constant.

The application is the art. And that’s what quality coaching is all about.

First Principles of Performance – Part III

What Do Performance Programs Actually Look Like?

The same physical qualities. Different priorities. Intelligent application.

Part I, we dismantled the myth.

Part II explained the physiology.

Part III shows how to construct the program.

The Central Thesis

Programming is not the indiscriminate accumulation of desirable exercises. It is the deliberate allocation of finite adaptive resources.

Every athlete would benefit from being stronger, more muscular, more powerful, better conditioned, more mobile, and more resilient. The problem is that no one can maximize every quality simultaneously.

A sound program therefore asks:

  1. What must be developed?
  2. What must be maintained?
  3. What may be temporarily deprioritized and for how long?
  4. What forms of training deliver the greatest benefit with the least conflicting fatigue?

That’s where the individual disciplines separate.

The Framework

Before discussing specific populations, let’s discuss a common framework that can apply to anyone.

The Primary Objective

The primary objective determines what receives the athlete’s best energy, highest-quality practice, and largest recovery allocation.

  • General physical preparedness (GPP): broad competence without narrow specialization
  • Tactical readiness: resembles GPP but carries a different standard. Failure is not an option
  • Olympic Weightlifting: technical power, speed, athleticism, superior flexibility + stability at end ranges of motion, and maximal strength
  • CrossFit: develop broad competitive capacity across the 10 general physical skills and also have “home run” ability in several of those skills
  • Bodybuilding: hypertrophy, size, and muscular symmetry
  • Healthy aging and Wellness: preservation of strength, power, muscle, mobility, and cardiorespiratory fitness

Developing Secondary qualities

Secondary qualities support the principal objective but must not compete excessively with it.

For example:

  • An Olympic weightlifter needs aerobic fitness for recovery and general wellness, but not the capacity to run a marathon.
  • A bodybuilder needs conditioning, but not enough aerobic volume to take away from building muscle.
  • A tactical athlete needs strength, but not at the expense of sharpness of movement, the ability to endure, and engage and disarm enemy combatants, i.e. maintain occupational durability.
  • A more mature adult needs to build and/or maintain muscle mass, but also enough power, balance, coordination, flexibility, and aerobic capacity to remain independent.

Establishing the minimum effective dose

Not every quality requires maximal training volume. Some qualities can be developed with relatively little work. Others can be maintained with substantially less work than was required to build them.

This allows a coach to place most resources toward the current priority while preserving other capacities.

Control competing fatigue

The interference problem is not merely molecular. It is mechanical, neurological, metabolic, and logistical.

Two sessions may theoretically coexist but still conflict because they stress:

  • The same musculature
  • The same joints and connective tissues
  • The same energy systems
  • The same neurological resources
  • The athlete’s limited sleep, time, and nutrition

This is why modality, sequence, volume, and timing matter.

Sequence the training week intelligently

The highest-priority, highest-skill, and highest-velocity work should generally occur when the athlete is freshest.

  1. Technical and explosive work
  2. Heavy strength work
  3. Hypertrophy or accessory work
  4. Conditioning
  5. Supplemental mobility and tissue restoration

That order can change according to the sport, but it gives us a sound starting point.

How the application changes

CrossFit: developing breadth without creating chaos

opt ccp drugs
opt ccp brain on drugs

CrossFit presents one of the hardest programming problems because nearly every physical quality matters.

Why does CrossFit usually present a problem for most coaches? We begin with the 10 general physical skills. They are cardiovascular/respiratory endurance, stamina, strength, flexibility, power, coordination, agility, balance, and accuracy.

  • Cardiovascular/respiratory endurance – The ability of the body’s systems to gather, process, and deliver oxygen
  • Stamina – The ability of body systems to process, deliver, store, and utilize energy
  • Strength – The ability of a muscular unit, or combination of muscular units, to apply force
  • Flexibility – the ability to maximize the range of motion at a given joint
  • Power – The ability of a muscular unit, or combination of muscular units, to apply maximum force in minimum time
  • Speed – The ability to minimize the cycle time of a repeated movement
  • Coordination – The ability to combine several distinct movement patterns into a singular distinct movement
  • Agility – The ability to minimize transition time from one movement pattern to another
  • Balance – The ability to control the placement of the body’s center of gravity in relation to its support base
  • Accuracy – The ability to control movement in any given direction or at a given intensity”

So, a competitive CrossFit athlete requires:

  • Maximal and relative strength
  • Olympic lifting proficiency
  • Gymnastics skill
  • Aerobic capacity
  • Anaerobic power
  • Muscular endurance
  • Movement efficiency
  • Fatigue resistance
  • Rapid recovery between efforts, et cetera

The danger is confusing variety with randomness.

A well-designed CrossFit program should not simply expose the athlete to more movements and more suffering. It should develop identifiable qualities in a logical sequence.

Primary considerations

Strength and skill must be developed and then protected.
Heavy lifting, technical precision/near perfection in the Olympic lifts, and advanced gymnastic skill should not routinely be performed after unnecessary fatigue.

Conditioning requires structure.
The athlete needs distinct exposures to:

  • Low-intensity aerobic development
  • Threshold or tempo work
  • Short glycolytic intervals
  • Sprint interval training
  • Mixed-modal competition pieces

Not every metcon should destroy the athlete.
Some sessions should develop pace, transitions, breathing control, or movement economy without producing maximal fatigue.

The interference effect is managed through planning.
Heavy squats should not be surrounded by repeated high-volume running, jumping, and cycling sessions unless that fatigue is intentional.

CrossFit programming should develop the unknown and unknowable by building deep, transferable capacities, not by making every day unknowable to the coach.

Hypertrophy: condition the athlete without stealing from growth

For hypertrophy, the principal objective is clear:

Accumulate sufficient high-quality resistance-training volume to stimulate muscle growth, then recover from it.

Cardiovascular training should improve health, work capacity, and recovery without degrading lifting performance.

Best applications

  • Zone 2 bike/row/ski, jogging if you can maintain zone 2, or other similar cardiac demand work
  • MAP training or what I call “CrossFit aerobics”
  • Short tempo intervals
  • Carefully dosed sprint work
  • Sleds, carries, or machines that reduce eccentric loading
  • Conditioning performed after lifting or in separate sessions

Primary constraints

The bodybuilder or hypertrophy-focused lifter must manage:

  • Total lower-body fatigue
  • Caloric expenditure
  • Joint stress
  • Session duration
  • Interference with progressive overload

The appropriate amount depends on the athlete’s training age, caloric intake, exercise selection, and recovery.

The practical rule is straightforward:

Conditioning should leave the athlete better prepared to train, not chronically less capable of producing force and volume.

Bodybuilding: hypertrophy with greater specialization

built rep after rep, brick after brick

Bodybuilding and general hypertrophy training overlap, but bodybuilding adds several constraints:

  • Muscular symmetry
  • Proportional development
  • High local training volume
  • Fatigue management across many isolation exercises
  • Contest preparation and caloric restriction
  • Preservation of muscle during fat loss

Cardio becomes more prominent during contest preparation, but recovery resources simultaneously decline.

That makes modality selection especially important.

Low-impact cardio often becomes preferable because it increases energy expenditure without imposing excessive eccentric loading or soreness. As calories fall, the athlete must also avoid the common mistake of increasing cardio aggressively while maintaining all previous lifting volume.

Bodybuilding programming is therefore an exercise in resource preservation:

  • Retain muscular tension
  • Preserve strength where possible
  • Manage fatigue
  • Increase energy expenditure gradually
  • Avoid turning every session into a test of willpower

The same physiology applies. The context changes.

General Physical Preparedness: build the widest useful base

unit
unit

GPP is not preparation for nothing. It is preparation for many possible things.

The objective is broad physical competence:

  • Reasonable strength
  • Useful muscle mass
  • Aerobic fitness
  • Anaerobic capacity
  • Mobility
  • Coordination
  • Power
  • Durability

A GPP program should avoid the extremes of narrow specialization.

The athlete does not need:

  • Powerlifting-level maximal strength
  • Marathon-level endurance
  • Bodybuilding-level weekly muscle volume
  • Elite Olympic lifting technique

But the athlete benefits from meaningful development in all of them.

A balanced GPP week might include:

  • Two or three strength sessions
  • One power or sprint exposure
  • Two aerobic sessions
  • One higher-intensity conditioning session
  • Carries, sleds, jumps, throws, crawling, or climbing
  • Regular movement-quality work

This is where first principles matter most. GPP should create optionality: the ability to enter a more specialized phase without beginning from zero.

Tactical readiness. The real unknown and unknowable.

walk em down

Tactical readiness resembles GPP but carries a different standard. Failure is not an option.

The tactical athlete may need to:

  • Sprint – short, medium, and long distance, under load, taking and returning fire
  • Climb – 15 – 30 ft. ropes for multiple reps
  • Fight – from striking, to grappling, to weapons defense and disarming skill, and all must work under possible extreme fatigue
  • Drag or carry another person, possibly multiple people
  • Move large loads, long distance, and quickly
  • Operate for hours
  • Recover quickly
  • Make innumerable decisions under fatigue
  • Repeat near perfect efforts without warning

That’s the minimum standard and it requires far more than “being strong” or being “in shape” ever can.

The old saying is, the novice practices the movements so they don’t get them wrong. The professional has practiced them so often they can’t get them wrong.

Programming priorities

  • Relative and absolute strength
  • Loaded movement capacity
  • Grip and trunk endurance
  • Aerobic base
  • Martial Proficiency
  • Repeated sprint ability
  • Anaerobic endurance
  • Power and rate of force development
  • Durability under imperfect, and often austere, conditions
  • Recovery between multiple, unpredictable efforts

The program must also preserve technical and occupational skills. Fitness should support marksmanship, defensive tactics, movement, communication, and decision-making rather than degrading them through constant exhaustion.

The “unknown and unknowable” should be addressed by building robust capacities and occasionally testing their integration.

It should not justify random training. Uncertainty in the mission does not require uncertainty in the program. That should be one of the article’s anchor lines.

Olympic weightlifting: develop strength, speed, power, technical skill, and force production

Greg and Amiee – the early days of Catalyst Athletics

Olympic weightlifting is a highly technical, speed-strength, and power output sport.

Its primary qualities are:

  • Technical proficiency
  • Explosive strength
  • Maximal strength
  • Speed-strength
  • Superior positional mobility
  • Well-developed neuromuscular adaptation

Conditioning is useful, but it must remain subordinate to performance in the snatch and the clean and jerk.

Productive conditioning

  • Low-intensity aerobic work
  • Short cyclical intervals
  • Sled work, carries, et cetera
  • Limited sprint exposures whether it’s running, rowing, bike erg assault bike, or ski erg
  • General body weight flow/movement and recovery work

Common programming error

A weightlifter can become so conditioned that the conditioning begins to impair the quality of technical practice, squatting, pulling, and recovery.

Conversely, poor aerobic fitness can reduce training density and the ability to recover between sets and sessions.

The goal is not maximal endurance.

It is sufficient conditioning to support greater quantities of high-quality weightlifting.

Healthy aging: train what age attempts to take away

Healthy aging may be the most important application because nearly every major physical quality declines without deliberate training.

The program should preserve:

  • Muscle mass
  • Maximal strength
  • Power
  • Bone density
  • Aerobic capacity
  • Balance
  • Coordination
  • Mobility
  • Confidence in movement

Power deserves particular emphasis because it often declines faster than maximal strength and is essential for preventing falls, climbing stairs, catching oneself, and moving quickly when necessary.

A complete healthy-aging program should therefore include:

  • Progressive resistance training
  • Safe explosive intent or power training
  • Zone 2 aerobic work
  • Some higher-intensity aerobic exposure
  • Balance and unilateral movement
  • Carries and gait work
  • Mobility sufficient for daily function
  • Practice getting down to and up from the floor

The objective is not merely extending lifespan.

It is preserving capability across the lifespan.

The 70-year-old and the competitive athlete are not performing identical workouts, but the underlying qualities remain the same. Load, velocity, complexity, volume, and risk are adjusted to the individual.

Again: different in degree, not in kind.

The comparative model

PopulationPrimary EmphasisSupporting ConditioningMain Interference Risk
CrossFitBroad competitive capacityFull spectrumExcessive mixed fatigue and inadequate specialization
HypertrophyMuscle growthLow-impact aerobic and concise intervalsReduced lifting quality and recovery
BodybuildingMuscular size, symmetry, leannessProgressive low-impact cardioEnergy deficit plus excessive total volume
GPPBroad competenceBalanced aerobic and anaerobic workRandomness without measurable progression
TacticalDurable performance under uncertaintyAerobic base, loaded work, repeated effortsFitness fatigue degrading occupational skill
Olympic weightliftingSkill, power, maximal strengthMinimal effective conditioning doseLoss of speed, freshness, and technical quality
Healthy agingCapability and independenceAerobic base plus selected intensityUnderloading, excessive caution, and lack of power work

The deeper lesson

This third article should not merely contain seven sample programs. It should teach the reader how to reason.

The reader should finish understanding that programming is a process of adjusting several variables:

  • Priority
  • Frequency
  • Intensity
  • Volume
  • Modality
  • Sequence
  • Recovery
  • Specificity

The exercises are not the program. The allocation of stress is the program.

That is how we prevent the article from becoming a collection of templates that readers blindly copy. We can include sample weekly structures, but each one should demonstrate the principle behind the arrangement.

The barbell, a bike, the rower, a sled, the track, or a pull-up bar are not competing philosophies. They are tools. Their value depends on the problem they are being used to solve.

A bodybuilder, Olympic weightlifter, tactical professional, CrossFit athlete, and older adult all require strength, endurance, power, movement competency, and resilience. The needs vary in application, not in kind.

Good programming does not ask which quality is universally best. It asks which quality matters most right now, how much of the others must be developed or preserved, and how they can coexist without obscuring the primary objective.

Programming is not the science of writing workouts. It is the art of organizing adaptation. As always, the principles remain constant. The application is the art and that’s what real coaching is all about

First Principles of Performance – Part II

The Interference Effect: Separating Physiology from Fitness Mythology

“Understanding what works is valuable. Understanding why it works changes the way you think forever.”

In the previous article, Cardio Doesn’t Kill Your Gains. Poor Programming Does, we challenged one of the most persistent myths in strength and conditioning.

The conclusion was straightforward.

Cardiovascular training does not inherently prevent muscle growth. Rather, poorly designed training, excessive volume, inadequate recovery, insufficient nutrition, and conflicting priorities, is what most often limits progress.

For the overwhelming majority of lifters, the question isn’t whether they should perform cardiovascular training. The question is how to integrate it intelligently into a well-designed program.

That practical advice is enough for most people.

But for coaches, athletes, and those who simply enjoy understanding why the body behaves the way it does, there is a much deeper story waiting beneath the surface.

That story begins inside a single muscle cell.

The Conversation Inside the Cell

Every training session asks your body a question.

Heavy squats ask: Can you produce more force?

A sprint interval asks: Can you generate enormous amounts of energy very quickly?

A thirty-minute Zone 2 session asks: Can you become more efficient?

Your muscles answer each of these questions by activating different signaling pathways that regulate adaptation.

These pathways are often portrayed as opposing armies locked in constant battle. One builds muscle. The other builds endurance. One must win while the other loses. It’s an appealing narrative. It’s also an oversimplification because biology is rarely that binary.

Meet the Two Most Famous Molecules in Exercise Physiology

If you’ve spent any time reading about muscle growth or endurance training, you’ve almost certainly encountered two acronyms:

AMPK

and

mTOR.

They’re frequently described as rivals. While that’s directionally true, the relationship is considerably more nuanced than the internet often suggests.

AMPK functions as the cell’s energy sensor. Whenever energy availability begins to decline, as happens during prolonged or demanding exercise, AMPK becomes activated.

Its job is straightforward and that’s to restore energy balance.

It encourages the body to become more metabolically efficient, increase glucose uptake, enhance fat oxidation, and promote mitochondrial adaptations that improve endurance over time.

mTOR serves a different purpose.

Rather than conserving energy, mTOR responds to mechanical tension, amino acid availability, particularly leucine, and adequate cellular energy by promoting protein synthesis, tissue repair, and muscle growth.

One pathway asks,

“How do we survive this demand?”

The other asks,

“How do we become stronger for the next one?”

Both are essential an neither is the enemy.

Where the Myth Begins

Here’s where decades of misunderstanding started. Researchers discovered that AMPK can suppress certain components of the mTOR pathway.

That finding quickly evolved into a popular conclusion:

“Cardio turns on AMPK.

AMPK turns off mTOR.

Therefore cardio kills muscle growth.”

Simple but also wrong, or at least incomplete. Because physiology almost never operates like a light switch.

Biology Prefers Dimmers Over Switches

One of the most overlooked aspects of exercise physiology is time. AMPK responds rapidly to energetic stress. During demanding exercise, it rises quickly.

Then, once the exercise ends and energy balance begins to recover, AMPK activity declines just as rapidly, often within minutes to a few hours.

mTOR behaves differently.

Following resistance training, especially when combined with adequate protein intake, mTOR signaling can remain elevated for many hours and, in some cases, more than a day as muscle protein synthesis continues.

These aren’t two permanent states competing for dominance. They’re temporary responses to changing physiological demands. Your body constantly adjusts which pathway receives greater emphasis based on what it needs at that moment.

Location Matters

Another misconception is that these pathways somehow control the entire body equally at all times. They don’t. Many signaling responses are remarkably localized.

The muscle fibers performing repeated contractions experience different metabolic demands than surrounding tissues. The cardiovascular system responds differently than skeletal muscle. The liver behaves differently than adipose tissue.

Even within skeletal muscle, fiber type influences adaptation. The body isn’t issuing a single command. It’s conducting an orchestra. Different sections play different parts. Together they produce adaptation.

The Body Doesn’t Choose Between Building and Improving

Perhaps the most fascinating aspect of this entire discussion is that AMPK and mTOR are not always mutually exclusive. Under certain physiological conditions, aspects of both pathways can be active simultaneously. Cells routinely remove damaged proteins while synthesizing new ones.

Energy availability can improve while structural remodeling occurs. Recovery itself is an ongoing process of destruction and regeneration. Our physiology isn’t designed around choosing one adaptation. It’s designed around balancing competing demands with extraordinary precision.

What the Research Shows

This is where molecular biology meets coaching.

When researchers move beyond isolated signaling pathways and study actual athletes over weeks and months, the dramatic interference many people fear becomes surprisingly difficult to reproduce outside very high volumes of endurance training.

Concurrent training research consistently demonstrates that the magnitude of the interference effect depends on factors such as:

  • Total endurance volume
  • Exercise modality
  • Session timing
  • Recovery
  • Nutritional status
  • Training experience
  • Overall programming

In other words, the molecular biology doesn’t invalidate the conclusions from the previous article, it explains them.

Recent research confirms that the so-called “interference effect” is real, but its magnitude depends on how training is programmed. For example, a 2016 study by Jones et al. found that, while concurrent training can slightly reduce strength gains compared to strength training alone, the effect is modest and can be minimized with thoughtful sequencing and recovery (Jones et al., 2016).

Why Running Sometimes Differs from Cycling

One particularly interesting finding is that not all endurance training produces the same interference.

High-volume running often creates greater reductions in hypertrophy than cycling or rowing.

Why?

Part of the explanation likely lies in mechanical loading. Running introduces thousands of eccentric foot strikes that generate additional muscular damage and recovery demands.

Cycling and rowing produce far less eccentric stress while still developing robust cardiovascular adaptations. The heart doesn’t particularly care how you elevate its workload.

Your joints and muscles often do. For athletes prioritizing hypertrophy, choosing lower-impact conditioning modalities can preserve more recovery capacity for strength training.

The First Principle

Understanding physiology should never replace good coaching.

It should explain it. The interference effect is real. But it is conditional, contextual, and frequently exaggerated. Most athletes don’t need to fear cardiovascular training. They need to respect recovery.

They need to understand adaptation. And above all, they need to remember that physiology doesn’t reward extremes. It rewards appropriate stress followed by appropriate recovery. That’s how stronger muscles are built. That’s how better cardiovascular systems are developed.

And that’s how thoughtful programming transforms isolated workouts into long-term performance.

Closing Thoughts

Perhaps the greatest lesson from the interference effect has nothing to do with AMPK or mTOR. It is a reminder that biology rarely conforms to the tidy, binary explanations we often prefer.

Strength or endurance. Cardio or muscle. Building or recovering. These are useful categories for conversation, but they are poor descriptions of how the human body actually functions. Our physiology is not governed by absolutes. It is governed by balance, adaptation, and context.

The best coaches understand this instinctively. Science simply helps explain why.

Next time we’ll discuss what performance programs actually look like. They’re the same physical qualities, simply applied with different priorities.

As always, the principles remain the same. The art is in the application of that knowledge.

References
Jones, T. W., Howatson, G., Russell, M., French, D. N., & Thomas, K. (2016). Performance and physiological differences between concurrent training and strength training. European Journal of Applied Physiology, 116(3), 665-678.