The Genetics Excuse

You hear it everywhere in the gym. "My shoulders take everything on the bench, I'll never have pecs." "My femurs are too long, I'm not built to squat." "I just don't have the genetics for big arms." "I'm a hardgainer, I can't build legs."

Every one of these statements is doing the same thing. It takes a complicated, multi-causal, ongoing process — building a body over years — and collapses it into a single fixed sentence: I cannot. Once that sentence is in your head, your training stops being a project and becomes a confirmation. Every session that doesn't deliver becomes more evidence you were right to give up.

This article is about why that sentence is wrong. Not "wrong in a feel-good way." Wrong in a structural, mechanical, observable way. And about what's actually happening when you hold onto it — because the genetics excuse is rarely about genetics.

The Confusion: Cause, Correlation, Context

Start here. When you press a barbell off your chest and your front delts feel like they're doing all the work, several things are happening at once:

• Your skeletal proportions
• The specific groove your bar travels through
• The position of your scapulae
• Where you place your hands
• The cue you're holding in your head
• The angle of your bench
• How your nervous system has learned to recruit muscles in this exercise specifically
• Whether you trained shoulders heavy yesterday and pecs are fresh
• Whether you've ever, even once, been taught how to feel your pecs in a press
• How long you've actually trained this lift seriously

That's the situation. Now look at what you said: "My shoulders take everything, so I'll never have pecs." You took ten interacting variables and reduced them to one — the only one you can't change. You called it "genetics" and walked away.

The honest answer is that nobody knows which variable is the bottleneck. Not you, not your coach, not anyone. You can have a hypothesis. You can test it seriously. But you cannot make the leap from "this exercise, today, feels heavy in my shoulders" to "I am genetically incapable of building pectorals." Those two statements are not on the same scale of evidence.

The Femur Argument, Properly Understood

The long femur story is the perfect case study. People with longer femurs do struggle more with the standard back squat. The geometry forces them to lean further forward to keep the bar over their mid-foot, which shifts more load onto the posterior chain — glutes, hamstrings, low back. This is real.

But here is what most people miss. The back squat is not a bad exercise for them. What's happening is that their quads are too weak to hold the position. The quads fold under load. The torso shifts forward as a survival reflex. The posterior chain takes over because it's stronger. The quads escape, because they can.

The conclusion most people draw is: "I'm not built for squats, my quads won't grow." This is the wrong conclusion. The correct conclusion is: my quads are weak, and they keep escaping because the back squat lets them escape.

The solution is to take the quads to a place where they cannot escape. The hack squat is one such place. The track of the machine fixes the bar path. The torso stays vertical. The knees travel forward. The quads have nowhere to hide — they take the load whether they want to or not. So you hammer them there. You build them. You make them massive and strong, over months, over a year, with serious work.

The hack squat is not a detour. It is an excellent exercise in its own right, and given what it does to the quads, you would do well to keep it in your training permanently. The point is not to replace the squat with the hack squat as a workaround. The point is that once the quads are strong enough, the back squat also starts to work the way it was supposed to. Both lifts now serve you. You haven't given up on the squat — you've earned the body that can actually do it.

This generalizes. The "bodyparts you can't train" usually aren't bodyparts you can't train — they're bodyparts that have learned to delegate work to stronger neighbors, and the standard exercise lets them keep delegating. You build them somewhere they can't delegate. Then everything you do, including the standard exercise, starts working.

What Most People Actually Do

Here is the lie that runs through every "I can't build legs" story. Almost nobody who says this has actually trained legs seriously. They tried the back squat for a few weeks, found it painful and demanding, decided it "doesn't work for them," and migrated to something easier.

That something easier is almost always one of three options. Leg press. A weak exercise that produces feelings of effort without producing the adaptations real squatting produces. The people who live on it tend to have soft legs that never quite respond. Or leg extensions and leg curls. Isolation work that has its place after the real work but cannot substitute for it. Or nothing — they skip leg day, become the "I don't really like training legs" person, and construct a story about their genetics to justify it.

In every one of these cases, the lifter has not done the work. They've spent five years pretending to. Then they look at someone with developed legs and conclude that person has "good genetics," because the alternative — that they themselves have been hiding — is unbearable.

The Symbolic Variable Nobody Counts

Here is something every honest coach knows and nobody puts in print. The number one predictor of how much a muscle grows is how much you actually want to train it.

Not how much you say you want to train it. Not how much you feel you should. How much, in your body, when the alarm rings, you are pulled toward the rack to do that thing. The intent you put into the work. The presence. The willingness to chase the rep when it hurts.

This is not motivational poster talk. It's mechanical. Muscle growth requires repeated exposure to high-effort contractions over years. The person who finds leg day genuinely thrilling will out-train the "better-built" person who finds it a chore — every single time. Over five years, the gap is enormous. Over ten, it isn't even comparable.

Two people walk into a gym. Person A has clean leverages for the squat — short femurs, long torso, mobile ankles. Person B has long femurs and feels squats awkward. But Person B finds leg day to be the day he looks forward to all week. Person A finds squatting boring and skips it whenever he can rationalize it.

After five years, who has bigger quads? Person B. By a wide margin. Every time.

Desire is a physiological variable. Not a metaphor — a variable. It changes which exercises you do, which cues you hold, how long you stay in the gym, whether you eat to support the growth, whether you sleep, whether you go back the next day. All of these compound. The skeleton is fixed. The desire is not. And the desire matters more.

The Composition Analogy: Always Degree, Never Category

To see why "genetics" is the wrong frame, look at what people say about body composition. Some are convinced they "can't get lean" because of their genetics. Others believe they're "naturally lean" thanks to theirs.

Both are wrong in the same way. Energy balance applies to every human body without exception. Some people burn slightly more calories passively at rest than others — that's true. The difference is real and measurable. But it's a difference of degree, maybe 100 to 200 kcal per day on the margins, not a difference in kind. Nobody is exempt from the laws of thermodynamics. Everyone responds to a deficit. Everyone responds to a surplus.

What "genetics" actually means in this domain is that your starting point is slightly different from someone else's, and the rate at which you respond is slightly different. That's all. It is never the binary "I can / I can't" that people use it as.

The exact same logic applies to muscle building. Some people respond faster to volume. Some need more frequency. Some build a given muscle group easily and another with difficulty. None of this means "impossible." It means "differently." The work is the same. The work just takes a different shape and a different timeline for you.

The word "genetics" is being used to do work it was never meant to do. It started as a description of where you begin. It got turned into a sentence about where you can end up. Those are not the same.

The Real Problem: The Demand to Be Recognized as Disabled

We are at the core now. Why does the "genetics" framing have such a grip on people, even when the evidence against it is so obvious?

Because it accomplishes something for them. The genetics excuse is a request — sometimes explicit, more often unconscious — to be recognized as disabled. Not in the medical sense. In the symbolic sense. To be seen as someone for whom the normal rules of effort do not apply. Someone the environment owes an accommodation. Someone who, by being a special case, is exempt from doing what everyone else has to do.

This is what "genetics" is being asked to provide. A diagnosis. A reason the standard work can be set aside. Permission to stop pushing, because pushing wouldn't help anyway. The body is the obstacle. The environment should adapt. The lifter himself has no further work to do.

But the entire principle of training is the opposite movement. Training is the production of adaptations in oneself. You are the one who changes. The environment doesn't soften — you get stronger relative to it. The bar doesn't get lighter — you become heavier underneath it. The discipline doesn't relax — your tolerance for it deepens. Training works on a body that is willing to be the site of change.

A lifter who is asking to be recognized as disabled is asking, in effect, for training not to apply to him. He wants the resistance to go away, not to be overcome. He wants the exercise to suit him, not to demand something of him. He wants the result without the adaptation. This is incoherent. It is also extremely common.

The genetics excuse, looked at this way, is the symptom of someone who would rather be sick than be working. Sickness gets sympathy. Sickness has standing. Sickness exempts. Work has no standing — work is just what you have to do — and it offers no narrative protection from failure. So the unconscious chooses sickness.

This is narcissism in the precise sense. Not vanity. The placing of the self at the center of explanation, as the singular exception that the rules don't reach. "My body is different. My case is unique. My obstacle is structural." All of these are ways of saying: I shouldn't have to.

The Same Mistake, Repeated in Two Directions

There are two kinds of lifters who end up trapped by the genetics excuse, and they look like opposites. They aren't.

The first kind has been doing the same thing for years and has quietly given up on it producing anything. Same exercises, same rep ranges, same approximations, every week. He has stopped expecting results. The training has become a ritual emptied of intent. He goes through the motions and tells himself "well, this is just how my body responds." The body, of course, responds exactly to the absence of intent — it doesn't change.

The second kind looks like the opposite. He changes constantly. New program every few weeks. New theory after every video. New exercise the moment the current one starts to demand something. New split, new rep range, new tempo, new cue. From the outside this looks like effort, and from the inside it feels like effort. The lifter is convinced he's "trying everything."

These two appear to be opposite errors. They are the same error. Both of them are ways of avoiding the real work. The first repeats his mistake in place. The second repeats his mistake in motion. The first never confronts what he's been doing wrong because he stopped paying attention. The second never confronts what he's been doing wrong because he never stays with anything long enough for the wrong to surface. Both of them, at the end of five years, are exactly where they started. Both of them blame their genetics.

The body cannot tell the difference between the immobile lifter and the changing one. Neither has given it anything to adapt to. Adaptation requires sustained, demanding, intelligent stimulus. The first provided no demand. The second provided no continuity. Neither provided both.

The Real Work

If you've been carrying a story about your genetics — about a muscle you "can't" build, about a lift you're "not built for" — the work is not what you think it is.

It is not trying yet another exercise to see if it suits you better. That framing is still inside the original mistake. It says: "I'm different, the standard work doesn't apply to me, the environment owes me a custom solution." The longer you operate in that frame, the deeper the excuse takes root.

The real work is to make a decision that is intransigent and just. Intransigent, because it doesn't bend to what feels comfortable today. Just, because it does what the situation actually requires.

If your quads are weak, the just decision is to train them where they cannot escape — and to stay there, with serious load and serious intent, for as long as it takes. Twelve months minimum before you decide anything. Not because twelve months is a magic number, but because anything shorter is sampling, not training. The same logic applies to every "bodypart I can't build." Find the place where it cannot delegate. Stay there. Bring real effort. Wait.

This is not advice that feels good. It doesn't promise that the work will be enjoyable, that progress will be linear, or that you are special. It only promises that the work will work, on the same terms it has worked for everyone else.

If you cannot find the resolve to do this — if every approach you try fades within weeks, if every new program becomes a justification for the last one not having worked, if you keep arriving at the same complaint about your genetics under different framings — then the work is no longer purely a training problem. It is a problem of the relationship between you and your own desire. That is what supervision exists for. You don't need someone to give you another exercise. You need someone to help you stop running.

The Closing

Your skeleton is not your destiny. Your bench press groove is not a sentence. Your femurs are not a verdict.

What you have, instead, is a body in motion through time, interacting with everything you do to it. The genetics is one ingredient in that interaction. It is never the whole thing. It is never even the decisive thing.

The decisive thing is the work, sustained for years, with presence, with intent. The decisive thing is staying when staying is what's required. The decisive thing is to stop arranging your training around the story of your own exception.

Stop being interested in why you can't. Start being interested in the work itself. The body will follow.