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 I

Cardio Doesn’t Kill Your Gains. Poor Programming Does.

“The first principle isn’t choosing between strength and conditioning. It’s understanding what adaptation you’re trying to create.”

The Lion Killer

For decades, one of the most persistent myths in strength training has been deceptively simple:

“If you want to build muscle, avoid cardio.”

It sounds reasonable. After all, endurance athletes tend to be lean, while bodybuilders are muscular. Somewhere along the way, many people concluded that cardiovascular training and muscle growth must exist at opposite ends of the same spectrum.

Like most fitness myths, there’s a grain of truth buried beneath a mountain of oversimplification.

Can excessive endurance training interfere with maximal hypertrophy? Yes.

Can intelligently programmed cardiovascular training improve your health, enhance your recovery, increase your work capacity, and have little meaningful effect on muscle growth?

Also yes. The difference isn’t cardio. It’s programming

The Wrong Question

People often ask, “How much cardio can I do without losing muscle?” It’s the wrong question. The better question is: What adaptation am I trying to produce?

Every training session asks your body to solve a problem. Heavy squats ask it to produce more force. Tempo intervals ask it to become more efficient at clearing lactate.

Sprints demand explosive power. Long easy efforts improve aerobic efficiency.

These aren’t competing identities. They’re simply different physiological adaptations. Understanding that distinction changes everything.

First, Let’s Define “Cardio”

One reason this discussion becomes so confusing is because we use the word cardio as though it’s a type of exercise.

It isn’t. It’s a physiological demand.

Your cardiovascular system doesn’t know whether you’re running, rowing, cycling, carrying sandbags, or performing twenty-rep squats. It only knows that your muscles require oxygen, nutrients, and energy.

Think about workouts like:
– The Standard (Grace – 30 clean and jerks at 135/95, 30 ring muscle ups, Isabel – 30 snatches at 135/95)
– Heavy sled pushes
– Oly complexes of 5 reps or more
– 2k row for time
– 5k run
– Fran
– 20 rep max back squat
– Murph

Nobody finishes those wondering whether their cardiovascular system was challenged. Weight training can absolutely become cardiovascular training depending on how it’s programmed.

Intensity.
Density.
Rest intervals.
Exercise selection.
Volume.

These variables determine the cardiovascular demand, not whether you’re holding a barbell or running shoes. The conversation isn’t “weights versus cardio.”

It never was.

Where the Myth Came From

The concern isn’t entirely imaginary.

Researchers have long studied what’s known as the interference effect, the observation that combining endurance and resistance training can, under certain conditions, reduce some strength and hypertrophy adaptations compared with resistance training alone.

Notice the language. Can. Under certain conditions.

Not: Always. Those conditions matter.

A competitive marathon runner performing sixty miles each week while trying to maximize leg hypertrophy faces a very different challenge than someone lifting four days a week while adding two thirty-minute conditioning sessions.

Those are not the same training problems. Yet they’re often discussed as though they are.

What Actually Interferes?

For most lifters, muscle isn’t lost because they jogged. It’s lost because recovery becomes the limiting factor.

Poor programming often looks like this:
Heavy lower-body lifting followed immediately by long-distance running.
High-volume conditioning layered on top of already excessive lifting volume.
Poor sleep.
Insufficient calories.
Inadequate protein intake.
Eventually something has to give.
Trying to train near maximally, whether it’s loading or intensity, 4-6 days per week.

If training continually exceeds your ability to recover, progress slows—not because cardio is inherently bad, but because the total stress exceeds your adaptive capacity.

The Research Is More Encouraging Than the Internet

Fortunately, the research is considerably more nuanced than the internet. Much of the fear surrounding cardio comes from laboratory discussions about molecular signaling. You’ll often hear that endurance exercise activates one pathway while resistance training activates another, and that these pathways “fight” each other.

There is truth here. But physiology is rarely as binary as social media suggests.

These signals are temporary. They’re influenced by nutrition, training age, exercise selection and most important, recovery.

And they’re often localized to the tissues being trained rather than acting as a simple on-off switch across the entire body.

More importantly, when researchers look beyond the molecular biology and examine actual training outcomes, the picture becomes much less dramatic.

For the overwhelming majority of recreational lifters, and even many competitive athletes, well-designed conditioning has little meaningful effect on muscle growth.

Programming matters far more than the mere presence of cardiovascular exercise.

I hope the archive of this blog never disappears.

Optimum Performance Training (OPT) James Fitzgerald

Numerous studies support the idea that cardio, when programmed intelligently, does not meaningfully hinder muscle growth. For example, a 2015 meta-analysis by Dr. Brad Schoenfeld and colleagues concluded that combining strength and cardio training results in only a negligible impact on muscle and strength gains, provided programming is sound (Schoenfeld, B.J., Ogborn, D., & Krieger, J.W., 2015, Sports Medicine).

Cardio That Supports Muscle Growth

If hypertrophy is your primary objective, conditioning should complement not compete with your lifting.

Generally speaking, it could look like the following:

  • Shorter, more intense sprint work.
  • Use interval-based conditioning where appropriate.
  • Row.
  • Cycle.
  • Throw med-balls.
  • Use the SkiErg.
  • Carry odd objects.
  • Push and pull sleds.
  • Perform tempo intervals.
  • Carry heavy implements.
  • Include sprint interval training when recovery allows.
  • Separate demanding conditioning from heavy lower-body strength sessions whenever practical.

Most importantly, keep the main thing, the main thing.

Conditioning exists to improve health, increase work capacity, and support recovery, not to leave you so fatigued that tomorrow’s strength session suffers.

Keep the Main Thing the Main Thing

The best programs are surprisingly disciplined. They know exactly what they’re trying to improve. Everything else exists to support that objective, not distract from it.

One of the greatest mistakes athletes make is assuming every session must improve every quality simultaneously.

It doesn’t. Training is about emphasis or specificity to the individual and their goals. Some phases prioritize maximal strength. Some emphasize hypertrophy, aerobic capacity gymnastic or Olympic Weightlifting skill. A skill Ive always referred to as barbell gymnastics because of how skill dependent they are.

The art of coaching isn’t teaching every quality simultaneously. It’s knowing which qualities deserve emphasis today, and which can simply be maintained until tomorrow.

That’s programming.

Paleo - BJJ - white belt - black belt - earned not issued

The First Principle

Cardio doesn’t kill your gains. Poor programming does. If your training reflects clear priorities, if recovery matches workload, if nutrition supports adaptation, if conditioning complements rather than competes with strength, then you can become stronger. You will then become stronger, healthier, and better conditioned.

Not because you avoided cardio, but because you finally stopped asking whether strength and conditioning are enemies.

They never were. They simply need a coach who understands how to make them work together.

The principles remain constant. The application is the art.

If you’re curious why all of this works, not merely what to do, we’ll step out of the weight room and into the physiology laboratory. There we’ll explore the molecular conversation taking place inside skeletal muscle every time you lift, sprint, row, or recover, and discover why the story is far more nuanced than the internet would have you believe.

References

Schoenfeld, B. J., Ogborn, D., & Krieger, J. W. (2015). Effect of concurrent aerobic and strength training on maximal strength, power, and hypertrophy in healthy adults: A systematic review and meta-analysis. Sports Medicine, 45(5), 697–708.

Wilson, J. M., Marin, P. J., Rhea, M. R., Wilson, S. M. C., Loenneke, J. P., & Anderson, J. C. (2012). Concurrent training: A meta-analysis examining interference of aerobic and resistance exercises. Journal of Strength and Conditioning Research, 26(8), 2293–2307.

In Defense of Carbs: Energy, Recovery, and the Science You Need

Most people fear carbs because they’ve been sold the idea that carbs equal fat gain. But for anyone who trains, thinks deeply, or recovers with intent, carbs aren’t optional; they’re essential.

This isn’t about eating gummy bears or Pop-Tarts and calling it “fuel.” It’s about understanding the physiological role of carbohydrates and using them to enhance output, mood, muscle retention, and recovery.

Let’s break it down.

1. Carbs = Performance

Glycogen (stored carbs) is your muscle’s preferred fuel during strength training, sparring, sprints, or any high-output effort. Without enough:

  • Strength drops
  • Endurance tanks
  • Motor control falters

Carbs refill that tank. Fewer reps and less intensity? That’s not a motivation problem; it might be a glycogen one. There’s a term known as “bonking” in a workout. To “bonk” in a workout is to reach the functional depletion of glycogen, brought on by exercise. In other words, it’s the condition in which your muscles run out of fuel, with profound effects on performance and well-being. And how do you avoid it? Adequate carbohydrate fueling for your level of performance.

Science Sidebar: When you eat carbs, insulin helps shuttle glucose into muscle cells to refill glycogen. This is why carbs matter most around activity, not when you’re sedentary. Research shows that athletes and active individuals who time carbs around exercise have better performance and recovery (Burke et al., 2011).

2. Carbs = Cognitive Clarity

Your brain runs on glucose. Low-carb fog is real. It shows up in several ways, such as decision fatigue, irritability, difficulty focusing, and a short attention span. Yes, ketones can serve as a backup fuel, but they’re not the most efficient during high-stress or high-focus days.

Carbs sharpen cognition, boost mood, and reduce stress response.

3. Carbs = Recovery and Muscle Retention

Carbs after training:

  • Restore depleted glycogen
  • Support protein synthesis
  • Lower post-training cortisol

They’re also “protein-sparing,” meaning your body doesn’t need to break down muscle for energy.

4. Carbs = Hormonal Stability

Low-carb diets for too long can suppress:

  • Thyroid output (especially T3)
  • Leptin (your satiety and metabolic rate signal)
  • Sleep quality and parasympathetic recovery

Especially for athletes, hard trainers, or people under high stress, this is a deal-breaker.

5. Carbs = Better Sleep

Moderate carbs in the evening:

  • Support serotonin → melatonin conversion
  • Lower cortisol
  • Help shift the body into parasympathetic mode.

Sleep: Carbs help lower cortisol levels and promote relaxation. Carbs also help raise serotonin, a neurotransmitter that supports relaxation and sleep. It’s one reason why a small carb snack before bed can improve sleep quality for some people. This is why low-carb diets can sometimes disrupt sleep.

Pro tip: Avoid eating after 8:00 PM. If you must have something, keep it light and digestible:

  • 1 banana
  • 1 scoop whey
  • 1 Fairlife 26g protein shake
  • Optional: 1 tbsp PB2

That’s ~350 kcal – just enough to support recovery without interrupting your sleep cycle.

The Real Issue Isn’t Carbs, It’s Unstructured Eating

People don’t “gain fat” from potatoes. They gain fat from:

  • Chronic snacking
  • Emotional eating
  • Under-fueling during the day and overeating at night

Carbs are fine; reactivity and randomness aren’t.

Coach’s Notes: Carb needs vary from person to person; listen to your body and adjust based on your activity, stress, and recovery.

  • Start with structure, not restriction.
  • Place carbs around output: morning, post-training, early dinner.
  • Observe how your sleep and recovery improve when you fuel with intention.

As silly as it may sound, a palm-sized portion of rice, potatoes, or fruit is a good place to start if you don’t want to count grams. Use your hand as a guide for portions.

Bonus tip: Carbs that are high in fiber, like fruit, potatoes, and whole grains, not only support performance, but also feed your gut microbiome, helping with digestion and immunity. And just in case you need a reminder, any fruit or vegetable is a carbohydrate source. Some are better than others, but the key is to eat the ones you like vs. trying to force yourself to eat anything you don’t like.

Suggested Reading:

Good Calories, Bad Calories – Gary Taubes
A well-researched, critical look at nutritional dogma and food myths, especially around carbs and fat.

Myth: Carbs make you fat. Truth: Excess calories, not carbs, drive weight gain.

Carbs don’t kill gains; they help sustain them. Used wisely, they improve output, cognition, mood, sleep, and recovery. However, as with any caloric intake, excess leads to consuming more calories than you burn, i.e., a caloric surplus = “weight gain.”

Action Challenge:

Track your carb intake for 3 days, but not just the grams. Track when and why you ate when you did:

  • Was it training-related?
  • Emotional?
  • Habitual?
  • Based on energy need?

Awareness creates clarity, and clarity can help drive consistency.

Next Week: You’ve dialed in protein and carbs. Now we’ll cover the most misunderstood macronutrient of all: fats.

How to use them for satiety, hormones, and cognitive support without overdoing it.

BCAAs Are Overrated — Here’s What to Do Instead

There was a time when tossing a neon scoop of BCAAs into your shaker cup felt like a secret code, like a sign that you were truly “dialed in.” Fast forward a few years, and the science is pretty blunt: if you’re already eating enough high-quality protein, those branched-chain amino acids aren’t doing much besides lightening your wallet.

Let’s break it down.

1. You’re Already Getting Plenty

BCAAs (leucine, isoleucine, valine) are just three of the nine essential amino acids your body needs to repair and build muscle. They’re naturally found in every solid protein source: meat, fish, eggs, dairy, and even plants. In fact, most whole protein sources already contain the 2-3 grams of leucine per meal needed to maximize muscle protein synthesis, making isolated BCAA supplements redundant.

If you eat real food and hit roughly 1.6–2.2 grams of protein per kilogram of body weight, you’re already covered. Studies keep confirming it: supplementing with BCAAs doesn’t outperform simply consuming complete protein. Here’s why: muscle protein synthesis requires all nine essential amino acids to activate mTOR signaling, the metabolic pathway that triggers muscle growth. BCAAs alone can’t complete the job. Without the full amino acid lineup, your body can’t finish the muscle-building process.

Unless your diet is severely lacking protein, that fancy powder isn’t rescuing anything.

2. Pop Culture Made It Cool — But Not Useful

Let’s be honest: a lot of this stuck around because of marketing and muscle culture. The fitness industry turned hydration into a brand identity with bright colors, bold claims, and goofy influencers sipping between sets like it’s rocket fuel.

It looks serious. It feels like doing something extra. But feeling busy isn’t the same as being productive. In truth, most BCAA use today is psychological, the ritual of “recovery in a cup” more than any measurable physiological edge.

Field note: I’ve worked with hundreds of lifters and athletes and not one of them ever turned a corner in strength, body comp, or recovery because they added BCAAs. But I’ve seen countless athletes break plateaus when they fixed their sleep schedule, added 20 grams of protein to breakfast, or simply trained with more consistency. The wins come from the boring fundamentals, not the colorful supplements.

3. The Paleo/Keto Twist

Here’s where a lot of people overcomplicate it.

If you’re following Paleo or keto and already eating quality animal protein, steak, tuna, salmon, eggs, you’re getting plenty of BCAAs naturally. The supplement is redundant.

But here’s the real issue: many low-carb folks turn to BCAAs because they’re afraid strategic carbs will derail their progress. They won’t. If you’re training hard two or three times a week, your muscles need readily available fuel. Natural carb sources like fruit, bananas, berries, oranges, apples, et cetera, around your training window will do more for performance and recovery than any BCAA powder.

That’s not breaking Paleo. That’s being smart. And it’s cheaper than another tub of supplements.

4. When Supplements Actually Make Sense

To be fair, there are scenarios where amino acid supplementation has merit but even then, BCAAs aren’t your best option.

If you’re training fasted (early morning workouts before you can eat), recovering from an injury where whole food intake is compromised, or genuinely struggling to meet your protein needs through diet alone, a full EAA supplement or quality whey protein makes far more sense than BCAAs.

Why? They deliver the complete amino acid profile your body needs to rebuild tissue and trigger muscle protein synthesis, not just the marketing-friendly three. You’re getting the full toolkit, not just a hammer.

Otherwise? Eat real food, train with purpose, sleep hard, repeat. Oh, and if you’re a vegan or vegetarian, you will need to use supplements to meet your BCAA and EAA needs, but that’s a story for another time.

The Takeaway

Most people sipping BCAAs are already getting what they need from their plate.

The supplement industry thrives on making simple things feel complicated. They profit when you believe that food alone isn’t enough—that you need their powders, their timing protocols, their proprietary blends to unlock results.

But the truth is simpler and cheaper: eat quality protein, train consistently, sleep well, and your body will handle the rest. The fundamentals work. They’ve always worked. And no neon powder changes that.

Save your money for real food, a good night’s sleep, or maybe a new pair of shoes for the trail. If you’re eating enough quality protein, you’re already doing what BCAAs promise — only better, and for less.

Fuel to Perform: The Athlete’s Edge in Everyday Eating

If you show up on the mats, under the barbell, or work hard to refine your gymnastic skills with any kind of serious intent, you’re not just training. You’re preparing and refining, often asking your body to do more than the day before. In our world, what you eat becomes the difference between a “good session” and a “great session,” and between strategic recovery and systemic breakdown. It’s the small details that separate showing up from showing out!

Let’s skip the noise and get tactical: how do semi-competitive athletes or serious recreational competitors fuel performance when life’s messy—work, travel, kids, and tired mornings? Let’s make it real.

The Big Picture

Research shows nutrient timing matters, especially around workouts. The ISSN says, “Purposeful ingestion of nutrients at various times throughout the day” (source) supports strength, power, body composition, and performance.

But for your average serious athlete? The “anabolic window” isn’t a specific, narrow window where you must cram in a meal. That “window” is basically as wide as a garage door. You don’t need perfect timing; it’s about being prepared at the right time.

Three Fuel Strategies That Work

1. Pre-training Anchor Meal
Eat something 60-90 minutes before your session: a moderate amount of carbs, lean protein, and a lighter amount of fat. Example: oatmeal with banana + a scoop of whey or Greek yogurt. Why? You’re topping off glycogen and priming your engine. If you train early and can’t eat, choose a liquid option: an easy-to-digest protein and carb-balanced smoothie.

2. In Training Mini Feeding (When It’s Longer or More Intense)
If your session lasts more than 60 minutes or you’re doing back-to-back days, plan a quick carb hit mid-session (30–60g) and hydrate thoroughly. Why? To prevent an energy crash during your training and help protect your neurologic control.

3. Post Training Recovery Meal
Hit carbs + protein within 1–2 hours after intense work. Aim for a carb-to-protein ratio of roughly 3:1 to 4:1. Why? To replenish muscle glycogen, repair muscle, and prepare for your next session. Example: 4-6oz chicken breast, 1/2 sweet potato, 1 cup of roasted veggies drizzled with garlic-infused olive oil + 1 banana + 1 tbsp peanut butter.

How to adjust for workload (without going neurotic)

• Light day/skill day: Reduce carbs by ~20–30% and keep protein moderate.
• Heavy day/max effort session: Increase carbs by 10–20%, keep protein steady.
• Rest day: Keep protein consistent, reduce carbs/fats based on hunger, not fear.

You don’t need daily macro spreadsheets. Just know your baseline, use a fuel strategy, and build awareness. This gets easier each week and with every rep.

matt shannon glory days of crossfit


Notes from the Field

I’ve watched CrossFit athletes and tactical team members burn themselves out because they consistently skipped their pre-session carbs or failed to track and meet their protein intake for 2 or 3 consecutive days. When your training really matters, you have to treat eating like it’s a part-time job. I’ve run a meal prep business, coached fighters, been a fighter, and lived and trained overseas. I know that life because I’ve lived and breathed it for years. Fueling with purpose is fundamental.

Super Simple Action Steps You Can Take This Week

Pick one heavy training day and one rest/light day. Write down your usual food. For the heavy day, increase pre- and post-training carbs. On a rest day, maintain a steady protein intake and reduce carbohydrates by approximately 20%. Have a pre-workout anchor meal 60 minutes before a session. Note your energy, focus, and performance.

Log your post-training recovery meal within 2 hours after a session—get your carb and protein hit. Track how you feel the next day.

The key takeaways: Fuel consistently, match carbs to your workload, prioritize recovery, and make eating part of your training routine.

Train. Eat. Recover. Repeat.

If you’re training to lead from the front, fuel like someone already ahead of the pack.