Can a specialist teach generality?

The fitness industry's obsession with specificity buried the most important concept in training. Likewise, it spurred a population to mimic sport specific training for general life goals. We have specialists teaching generality. The poor outcomes are predictable.

There's a phenomena that keeps repeating in our industry. A coach posts something about General Physical Preparedness. Another coach responds. Within a few hours, a dozen well-credentialed professionals are arguing about what GPP actually is — and more than a few conclude that it might not be a real thing at all.

Strength coaches with decades of experience, unable to agree on a definition. The conversation always goes the same way: someone cites Mel Siff, someone else invokes Verkhoshansky, someone brings up CrossFit's interpretation, and eventually the whole thread collapses into semantics. The underlying message lands, whether anyone says it directly or not: if the experts can't define it, maybe GPP is just a placeholder term for "the stuff we do that isn't our sport."

That conclusion is wrong. And it's wrong for a reason that reveals a much deeper problem in how we educate coaches who then educate people.

Every certification, textbook, and entry point into exercise science starts in the same place: the SAID principle. Specific Adaptation to Imposed Demands. You learn it first. You internalize it early. And then you spend the rest of your career chasing it.

The logic is clean and compelling. The body adapts specifically to the demands placed upon it. Want to get stronger in the squat? Squat. Want to run faster? Run. The principle, first formalized by Franklin Henry at UC Berkeley in 1958 as the "Specificity Hypothesis of Motor Learning," but it was built on the observation over thousands of years that a transfer between tasks is narrower than we assume. 

This insight is real. It is also incomplete.

The problem isn't that SAID is wrong. It's that we teach it as the first principle — and in doing so, we create coaches who see training through a lens of specificity before they've understood the substrate specificity acts upon. We learn the principle of directed adaptation before we understand the reality of general adaptation. And so when someone asks "What is GPP?", coaches instinctively try to define it through the framework of SAID. They ask: "General preparation for what?" — as if every form of training must be measured by its transfer to a specific task.

That question misses the point entirely.

The irony is that the Soviet system — the same system that produced the majority of the models we all reference — had a working definition of GPP. Not a vague one. It is functional, rooted in observable physiology.

In the Soviet framework, GPP occupied the first phase of the Unified All-Union Sports Classification and if you we’re adopted into the Master of Sports program it was the first portion in the annual training plan. Matveyev's classic periodization model, published in 1964 and later refined, placed general physical preparation at the foundation of athletic development. The preparatory period was subdivided into general and specific phases, with the general phase devoted to building what we might call biological readiness — not sport-specific skill.

The definition that emerged from this tradition, most clearly articulated in Siff's Supertraining (drawing on Soviet source material), described GPP as training "designed to provide balanced physical conditioning in endurance, strength, speed, flexibility and other basic factors of fitness." But the critical feature wasn't the list of qualities. It was the relationship between the training stimulus and the adaptive response.

Here is where most coaches lose the thread.

GPP, as the Soviets practiced it, was non-specific adaptation without accommodation.

Let's unpack that, because both halves of that phrase matter.

When we say "non-specific," we're not saying the training is random or purposeless. We're saying that the adaptations it produces are not confined to the specific movement pattern, energy system, or neural pathway being trained. The body is responding at a level below task specificity — at the level of tissue, vasculature, and systemic capacity.

This is not speculation. The research is extensive, and it paints a clear picture.

Michael Kjaer's lab at the University of Copenhagen has produced some of the most important work here. His 2004 review established that mechanical loading drives increased collagen synthesis and turnover in tendons, ligaments, and intramuscular connective tissue. A single bout of exercise increases tendon collagen synthesis by approximately 100%, and that elevated synthesis persists for up to 72 hours post-exercise. Critically, chronic loading over weeks produces a net positive shift — early in training, both synthesis and degradation rise, but over time the anabolic processes dominate, resulting in net collagen deposition and increased tissue resilience

For all of you who blacked out reading that very dull but important paragraph, this adaptation is not specific to the exercise performed. It's a tissue-level response to mechanical load. It means that the tendons don't know whether you were squatting, carrying, rowing, or hiking. They know they were loaded, and they respond by becoming more robust. This concept of training tissue qualities over exercise pattern efficiency is the gold standard of GPP.

Here is a weird one that you almost never hear about, the mechanostat theory. It is analogous to what we see in tendons, describes a threshold above which mechanical loading triggers an adaptive response in bone tissue. Below that threshold, the tissue degrades. Above it, the tissue remodels and strengthens. This threshold is fluid — it shifts based on the chronic loading history of the individual. Regular, varied mechanical loading keeps the mechanostat calibrated upward.

Aerobic base development — what the Soviets simply included as part of general preparation — produces adaptations that are genuinely systemic: increased cardiac output, improved capillary density in working muscle, enhanced mitochondrial function, and improved recovery between bouts of higher-intensity work. Even in 1952 they could tell you that cardio does not in fact kill your gainz. But they were not hyper fixated on breaking down aerobic function into zones and using one mono structural form of it as “aerobic development” like is popular today with the third rise of Zone 2 fanaticism. They did understand how potent intensity is. Like we have been arguing for years, improvements in anaerobic function may actually worsen aerobic development without concurrent aerobic training — that HIIT tends to be less effective without a base of aerobic development beneath it.

One of the most practically important findings from Bohm, Mersmann, and Arampatzis is that muscle and tendon adapt to training on different timelines. Muscle adapts faster. Tendon adapts slower. This creates periods of imbalance where the contractile tissue outpaces the structural tissue — a window of increased injury risk. GPP, with its lower intensities, varied loading patterns, and progressive tissue exposure, is specifically designed to narrow that gap. Not because it targets a specific movement, but because it gives the slower-adapting tissues time to catch up.

What’s interesting is that most coaches are aiming for these adaptations, but they are trying to do so specifically, with common repeated exercises, as opposed to thinking about how to get the adaptation without the pattern.

This is non-specific adaptation in action. The tissues become more resilient. The cardiovascular system becomes more capable. The organism as a whole becomes more prepared — not for a particular task, but for the capacity to handle tasks.

We often ignore the benefits of GPP because of metric fixation. We have been programmed to think progress only comes by way of increased lifts, run times, or MAF scores. But real progress is not a straight line, and it can rarely be accurately measured. Metric fixation can be described as an overwhelming focus on the map, and an ignorance of the terrain. Without data — no matter how poor it is at predicting outcomes — experts can rarely become authorities so they focus on variables and tests that they can improve or game, even if they don’t know it. If you’ve never heard the “Cobra story”, it’s worth reading.

The second half of the phrase — without accommodation — is equally important.

Zatsiorsky, in Science and Practice of Strength Training, described the biological law of accommodation: "the response of a biological object to a given constant stimulus decreases over time." In simple terms, the more you do of something, and the harder you do it, the less effective it becomes, which describes efficiency but also how the general population tries to get good at exercise instead of using exercise to improve their physiology. In doing so, what “used to work” no longer does. Exercise patterns that once served as useful ways to express an energy system later start to cause additional dysfunction. This is the plateau. The staleness.

Every coach knows this principle. But most apply it exclusively to advanced athletes doing formal exercise. They think of accommodation as something that happens to your bench press or your snatch or your 5K time. And the solution, in the specificity-driven framework, is to vary the exercise: rotate movements, change implements, alter loading schemes. Westside Barbell built an entire methodology around this — the Conjugate system as a direct response to accommodation.

But here's the insight that gets lost: accommodation operates most aggressively at the neuromuscular level. The nervous system habituates to repeated, specific stimuli faster than the tissues do. Repeated pattern-specific motor recruitment becomes efficient — which is the goal of sport-specific training — but that same efficiency means the stimulus stops driving structural adaptation.

GPP avoids this trap, not by rotating exercises within a narrow specificity band, but by operating beneath the threshold where neural accommodation dominates. The demands are general enough and varied enough that the tissues and systems continue to adapt without the nervous system "solving" the movement and shutting down the adaptive signal.

This is why GPP can be sustained over long periods without staleness. It's why a well-designed GPP block doesn't feel like it stops working after three weeks. The organism isn't accommodating because the stimulus isn't specific enough to accommodate to. The adaptation is happening at the structural and metabolic level — exactly where you want it for a foundation.

Now we can see why the Twitter arguments happen.

Coaches trained in the SAID framework try to define GPP in terms of specificity. They ask what it's for — which sport, which quality, which outcome. And when the answer is "it's not for anything specific," they interpret that as randomness rather than precision.

The SimpliFaster article by Missy Mitchell-McBeth got close to the core problem. She noted that coaches read Siff's definition and then immediately pivot to a narrow implementation — sled work, or conditioning, or whatever their pet modality is — ignoring everything in the definition after the word "endurance." The definition says strength, speed, flexibility, and other basic factors. But the coach's SAID-trained brain collapses all of that into "what has the most transfer to my athletes' sport."

This is the fundamental error. GPP is not about transfer. GPP is about capacity. The question isn’t "does this carry over to my sport?" It’s: "does this make the organism more robust, more resilient, and more capable of tolerating the training that will be specific?"

The Soviet system understood this intuitively because it was built from Selye's General Adaptation Syndrome forward, not from SAID backward. Selye defined stress as "the nonspecific response of the body to any demand." That word — nonspecific — is the one our industry threw away. We kept the syndrome (alarm, resistance, exhaustion) and used it to justify periodization. But we forgot that the entire framework was built on the observation that the body has a general adaptive response that precedes and underlies specific responses.

Selye observed patients with vastly different diseases and noticed they all shared the same symptoms: fatigue, appetite loss, weight loss, the general appearance of "being sick." He called it the "syndrome of just being sick." The specific disease didn't matter. The body's general response was the same.

The analog in training is this: before the body adapts specifically to a squat pattern or a sprint demand or an endurance effort, it adapts generally — at the tissue level, the vascular level, the hormonal level. GPP is training that targets this layer. Not the nervous system's pattern-matching. Not the metabolic specificity of a competition effort. The substrate that everything else is built on.

This framing has particular implications for lifetime fitness practitioners — the people who aren't training for a competition, who have no peaking date, who need their bodies to work well across decades rather than at a single point in time.

For these people, GPP isn't a phase. It is the training.

The sport-science model assumes a cycle: build a general base, develop specific qualities, peak, compete, recover, repeat. That's a finite game structure. It assumes the training has a purpose external to itself — a competition to prepare for. It has an end in mind.

But if there is no competition — if the goal is simply to remain strong, resilient, capable, and resistant to injury and disease across a lifespan — then the concept of "specificity" becomes much less relevant. What matters is the ongoing maintenance and development of tissue quality, cardiovascular capacity, movement competence, and structural integrity.

That's GPP. Not as a phase, as a philosophy.

The person who hikes, carries heavy things, does some form of resistance training across varied patterns, maintains their aerobic base, and challenges their range of motion on a regular basis — that person is doing GPP. Not because they're "preparing" for something specific. Because they're maintaining the general adaptive capacity that keeps the organism functional.

And the biological evidence supports this approach. Connective tissue responds to chronic, varied mechanical loading with increased collagen synthesis and structural resilience. Cardiovascular capacity responds to sustained aerobic demands with improved cardiac output and capillary density. Bone responds to the mechanostat threshold being regularly exceeded with maintained or improved density. None of these adaptations require specificity. They require consistency of general demand.

GPP is non-specific adaptation without accommodation. It is training that enhances tissue quality, cardiovascular capacity, and structural resilience through varied, sub-maximal, mechanically diverse loading that the nervous system does not habituate to quickly enough to shut down the adaptive response.

To train GPP is to ask some very simple questions: What is weak? What lacks range? Where am I inefficient? The answer is not sexy or Instagrammable, because it looks at what is most deficient, what we would call a constraint method — finding the weakest link and fixing it. It is a focus on the terrain, not the map.

The Soviets didn't argue about whether it existed. They just did it.