Rep Ranges

How many reps should you do? It's one of the most common questions in training, and the answer depends on who you ask.

If you're a powerlifter, someone will tell you that anything above five reps is bodybuilding. If you're a bodybuilder, you'll hear the classic eight to twelve for upper body, twelve to fifteen for lower body. Apparently thirty reps won't build muscle and singles won't either. The rules are everywhere and they're stated with confidence.

The truth is both simpler and more complex than any of them suggest.

Simpler, because you don't need to stay inside a narrow rep range to get results. More complex, because the body doesn't respond to training like a mathematical formula. There is no magic rep scheme that produces the same outcome for every person. There is too much nuance — not only from goal to goal, but from person to person.

After working with hundreds of clients I've arrived at one consistent observation: rigidly chasing a specific rep number is a mistake.

The danger cuts both ways. Fixating on a number can push you past the point where your form stays clean — raising injury risk and lowering training quality. Or it can make you stop short when you had more in you.

Two examples from the floor. A client bench pressing — moving well, starts to struggle around nine, ten, eleven, hits twelve. Good set. But I could see they had at least three more reps in them. I should have taken them there. On the other hand, a client doing heavy shoulder press. I want eight reps. They hit six and their form collapses — locked elbow, sagging shoulder, wrist giving out. We could grind out two ugly reps with a spot. But the risk-to-reward ratio isn't there and they won't get much out of it.

Strength, Hypertrophy, and Endurance Are Not Separate Worlds

Much of the confusion around rep ranges comes from purists trying to draw strict lines between endurance, strength, and hypertrophy. Bodybuilders avoid singles and triples. Powerlifters avoid anything above fifteen reps. If you have a specific goal it's easy to feel pressured into a particular range because someone said so.

But these systems overlap. The body isn't compartmentalised — everything is connected, and what happens to one system affects another. When programming is done intelligently, they complement each other.

A long-distance runner benefits from strength training because they can generate more force per step. A powerlifter benefits from higher-rep work because there is meaningful overlap in energy systems — not perfect overlap, but enough to matter. Treating these as separate worlds limits both your understanding and your results.

Rep Ranges Are Tools, Not Prisons

Rep ranges exist to help you select the right weight and know whether to go up or down after a set. That's it.

If you're supposed to do three squats and you hit six clean reps, that simply means the weight needs to go up next time. If you're aiming for ten reps in a hypertrophy block and you hit sixteen with good form, increase the weight. If your form breaks down at five or six when you were aiming for ten, stop there, reduce the weight, and go again. You don't grind out ugly reps.

What Actually Matters: Form and Intensity

Once your warm-ups are done and your working weight is established, two things take priority — in this order.

Form first. It keeps you safe and ensures you're loading the muscles you intend to load.

Intensity second. The simplest way to gauge correct intensity is this: in the last few reps of a set, something should change involuntarily. The bar slows down even though you're pushing just as hard. The muscle burns intensely. You feel yourself approaching failure. You don't need to train to complete failure — but for meaningful adaptation, especially hypertrophy, you need to get close. If you're breezing through every set, the stimulus isn't there.

Exceptions exist — deloads, beginners, maintenance phases. But as a general principle: if you want to improve, your intensity must be appropriate and your form must stay intact. Let either one slip and injury becomes a matter of when, not if. Injuries stop progress cold.

The Bottom Line

Rep ranges are guides, not rules. Use them to select weight and gauge whether the weight was right after the set is done.

Exceeded the range with good form — increase the weight. Can't stay in the range without form breaking — decrease the weight. Fell outside the range with good form — that's fine. Form and intensity are the variables that matter. The rep range is there to guide progression, nothing more.