Rest times between sets
Not one minute out of habit, nor five out of distraction: what the research says, depending on what you are training for.
Updated 26 September 2026
Try the timer, set to the bottom of the range
Go again.
The ranges, at a glance
| Goal | Compound | Isolation |
|---|---|---|
| Strength (1-5 reps) | 3 to 5 min | 2 to 3 min |
| Hypertrophy (6-12 reps) | 2 to 3 min | 1 to 2 min |
| Endurance (15+ reps) | 45 to 90 s | 30 to 60 s |
The myth that will not die
For twenty years every gym repeated the same line: rest one minute “for size”, three minutes “for strength”. The first half of that sentence is wrong.
It came from a real observation: short rests raise growth hormone after the session. Except that spike, we now know, has no measurable effect on building muscle. And when one minute is compared directly against three, it is the group resting longer that gains more.
The reason is simple and has nothing to do with hormones: with three minutes you get more reps on the next set. Across a whole session that is a lot more total volume — and volume does build muscle.
Why exercise type changes everything
A heavy squat and a biceps curl do not fatigue the same thing. After a set of squats it is not your quads stopping you from going again: it is being out of breath, and the nervous fatigue of coordinating half your body under load. The muscle itself would be ready well before.
An isolation exercise mobilises almost none of that. The working muscle recovers, the rest of you was never bothered. Hence the gap: three minutes on squats, ninety seconds on curls.
When time is short
The instinct is to shorten every rest. That is the worst trade: you lose performance exactly where it matters most. Better to:
- Keep rests long on the two or three heavy lifts at the start.
- Superset the isolation work — two opposing exercises back to back, biceps and triceps for instance. While one works the other recovers: you halve the dead time and lose nothing.
- Drop an exercise rather than rush all of them.
Really time it?
Yes, at least long enough to calibrate your instinct. The bias is well known and always points the same way: when the session is going well you go again too soon; when it drags, five minutes disappear into your phone.
The timer above gives you the idea. But having to start it by hand after every set is exactly the friction that makes people give up after three sessions. In SETR it starts by itself when you log a set, and it chimes even with the screen locked and the phone in your pocket.
The other tools
- One-rep max calculator — your estimated max, from an ordinary set.
- Barbell plate calculator — the exact loading, with the plates your gym actually has.
Frequently asked questions
Do short rests build more muscle?
No, and it is the most stubborn myth in the gym. It came from the observation that short rests spike growth hormone — true, but with no measurable effect on muscle gain. Studies comparing one minute against three directly show the opposite: with three minutes you lift more total volume, and you gain more.
Should I rest longer on squats than on curls?
Yes, considerably. A heavy squat recruits an enormous amount of muscle and taxes the cardiovascular and nervous systems: it is not your quads that need three minutes, it is everything else. A biceps curl mobilises almost none of that — a minute to ninety seconds is plenty.
What if I am short on time?
Rather than shortening every rest, keep them long on the two or three heavy lifts at the start and superset your isolation work (two opposing exercises back to back). You save time exactly where it costs nothing in performance.
Time it, or go by feel?
Time it, at least at first. The bias is well documented and always goes the same way: when the session is going well you go again too soon, and when it drags you lose five minutes to your phone. A timer removes the question — which is exactly why SETR starts one by itself the moment you log a set.