How Long to Rest Between Sets, by Training Goal

Two to five minutes between heavy strength or power sets. One to two minutes when the goal is muscle growth. Under a minute only for high-rep endurance and circuit work. That is the answer most people came for, and it comes from the American College of Sports Medicine and the NSCA. Pick your goal and the tool prints the range.

Where each of those four numbers comes from

The ACSM’s position stand on progression in resistance training gives a separate rest recommendation per goal, and it is more specific than the numbers that circulate in gyms:

• Maximal strength. At least 2 to 3 minutes for core exercises with heavier loads, at every training level. Assistance exercises may get by on 1 to 2 minutes. For advanced lifters working in the 1 to 6 RM range, the document’s own summary moves to 3 to 5 minutes.
• Hypertrophy. 1 to 2 minutes for novice and intermediate programs; 2 to 3 minutes on heavy core lifts once training is advanced.
• Power. At least 2 to 3 minutes for core exercises, 1 to 2 for assistance work — the same clock as strength, for a different reason.
• Muscular endurance. Short breaks, which the document defines as 1 to 2 minutes for sets of 15 to 20 reps or more and under a minute for sets of 10 to 15.

The NSCA arrives at the same place from the other direction. Its 2023 practitioner review on rest intervals tells trainers to “assign rest interval lengths within the 2 – 5 min range established by research, and then autoregulate within that range”, with 1 to 2 minutes reserved for single-joint accessory movements.

The 30-second rule for growth is the one that changed

For years the standard hypertrophy advice was 30 to 90 seconds, on the theory that the metabolic and hormonal response to short rest drove the growth. That is the recommendation a 2024 Bayesian meta-analysis went after. Pooling 19 measurements from 9 randomized studies that held every other training variable constant, the authors found a small effect favoring rest longer than 60 seconds, and wrote that the findings “are inconsistent with recommendations from the National Strength and Conditioning Association, which prescribe relatively short rest periods (30–90 s) for hypertrophy-related goals.”

The same analysis found no further gain from resting beyond 90 seconds. So the practical window for growth is wider and later than the old advice: start the next set somewhere between one and two minutes, and stop worrying about the stopwatch after that. The hypertrophy page walks through the numbers behind it.

What short rest actually costs you

Reps. Cutting the break does not make the same set harder in a useful way; it makes the next set smaller. In one 10-week trial pooled by that meta-analysis, lifters resting 180 seconds completed an average of 16.1 reps across three sets against 9.8 reps for a 60-second group, and gained more quadriceps cross-sectional area. When the short-rest group performed extra sets to match total work, the difference in growth disappeared — which tells you the rest interval was never the active ingredient. The work it protects was.

That also explains why the recommendation splits by exercise rather than only by goal. A squat recruits enough muscle that the fatigue carries into the next set for minutes; a lateral raise does not. Same session, two different clocks.

Pick the page that matches your session

• Rest between sets for strength, for work at or above 85% of your one rep max
• Rest between sets for hypertrophy
• Rest between sets for muscular endurance
• Rest between sets for power
• The rest between sets chart, if you want reps, loads and rest in one place

To turn a max into the working loads these rest ranges assume, use the 1RM percentage chart. To decide how often each muscle group comes back, see the training frequency calculator.

This content is informational and does not replace advice from a physician or a certified strength coach.