How long to rest between sets: what the research says for strength, muscle, endurance and circuits, and how to actually time it

Rest about 2 to 5 minutes between heavy sets when strength is the goal, about 1.5 to 3 minutes when you are building muscle, and under 90 seconds for light, high rep endurance work. In a circuit, about 30 seconds between stations that work different muscles is plenty. The rule underneath all of them: rest long enough that your next set still hits its reps with good form. Short rest is not a secret muscle building trick. Mostly, it just means you lift less.

Sources for every research number are listed at the bottom.

The short version

• Strength, heavy sets of about 1 to 6 reps: rest 2 to 5 minutes.
• Muscle, sets of about 6 to 12 reps: rest 1.5 to 3 minutes. Past about 90 seconds, the extra benefit fades.
• Muscular endurance, light sets of more than 15 reps: rest under 90 seconds.
• Circuits: about 30 seconds between stations that use different muscles.
• Big compound lifts get the long end of each range, small isolation lifts the short end.
• Short on time? Superset two exercises for opposing muscles instead of cutting your rest.

How long should you rest between sets for your goal?

Goal	Typical sets	Rest between sets
Strength	Heavy, about 1 to 6 reps	2 to 5 minutes
Muscle size	About 6 to 12 reps	1.5 to 3 minutes
Muscular endurance	Light, more than 15 reps	Under 90 seconds
Circuits	Different muscles, station to station	About 30 seconds between stations

Strength: 2 to 5 minutes

Heavy sets are where rest earns its keep. The American College of Sports Medicine's 2009 position stand on progression recommends 3 to 5 minutes between heavy sets of 1 to 6 reps. A 2018 systematic review of 23 studies pointed the same way for experienced lifters, concluding that rests longer than 2 minutes seem to be needed to maximize strength gains in people who already lift, while 60 to 120 seconds looked like enough for beginners.

One trial makes the point well. In 2016, 21 trained men followed the same program for 8 weeks: three full body sessions a week, 3 sets of 8 to 12 reps on 7 exercises. The only difference was the rest. The men resting 3 minutes gained more squat and bench press strength than the men resting 1 minute.

The research is not unanimous, and it is worth saying so. The ACSM's 2026 position stand, an overview of 137 systematic reviews that updates the 2009 one, found strength was not affected by short (under a minute) versus long (over a minute) rest, and the 2018 review found robust strength gains even with rests under 60 seconds. So if a minute is all you have, you will still get stronger. You will just leave some of it on the table, mostly on your heaviest sets.

Not sure what heavy means for you? Our bench press calculator turns any recent set into an estimated one rep max and a working weight for every rep range.

Muscle: 1.5 to 3 minutes

For muscle size, the best single summary is a 2024 Bayesian meta analysis of 9 studies. It found a small benefit to resting more than 60 seconds between sets, and no appreciable difference once rest went past 90 seconds. The 2016 trial agrees from its own angle: the men resting 3 minutes also grew more muscle in the front of the thigh than the men resting 1 minute. The ACSM's 2009 stand said 1 to 2 minutes for muscle, and the newer trials suggest the top of that range, and a little beyond it, costs you nothing.

To be fair to the other side, a 2017 systematic review found both short and long rests can build muscle, with a possible edge for longer rest in trained lifters, and the ACSM's 2026 overview found there were not enough data to say whether rest length changes muscle growth at all. The honest summary: rest is not the main lever for size. Total work is, and rest matters because of what it does to your total work. More on that below.

Why do older articles insist on 30 to 60 seconds for size? That advice leaned on hormones: a 2006 review noted that short rests produce bigger short term spikes in growth hormone, which might help muscles grow. A 2010 trial tested the idea head on. Twelve young men trained each arm separately for 15 weeks, one arm with a big hormone spike after the workout and one without. The arm without the spike grew 12 percent, the arm with it 10 percent, the difference was not significant, and strength rose the same in both. Your muscles do not seem to care about the spike.

Muscular endurance: under 90 seconds

For endurance, the fatigue is the point, so short rest is part of the workout. The ACSM's 2009 stand recommends light to moderate loads, 40 to 60 percent of your one rep max, for more than 15 reps with rests under 90 seconds. If your best bench press is 100 kg (220 lb), that is 40 to 60 kg (88 to 132 lb) for sets of 15 or more.

Circuits: about 30 seconds between stations

A circuit moves you from one exercise to the next, so each muscle rests while another one works. A 2006 review suggested about 30 seconds between exercises that use different muscle groups, and about 3 minutes between exercises that hit the same ones. It works, too: a 2017 meta analysis found circuit style resistance training improved both aerobic fitness, measured as maximum oxygen uptake, and bench press strength in healthy adults. Expect to breathe hard. That is the cardio part.

Why does longer rest help you build muscle?

Because it lets you do more work. Rest does not build muscle; work does, and short rest quietly eats into your work.

Short rest costs reps. In a 2007 bench press study, 8 trained men did five sets at 75 or 85 percent of their one rep max, with rests from 30 seconds to 5 minutes. With 30 or 60 seconds, their performance fell with every set, by 15 to 55 percent. With 2 minutes, they held their first two sets and then dropped 8 to 29 percent. With 5 minutes, only the fifth set dropped.

More work means more growth, up to a point. A 2017 meta analysis of 15 studies found a graded dose response between weekly sets and muscle growth: each additional weekly set added about 0.37 percent to the average gain in muscle size. If a longer rest is what lets your third set count, that set counts.

When the work is matched, the clock stops mattering. A 2022 trial settled this neatly. Twenty eight people trained their legs on a knee extension twice a week for 10 weeks, with 1 or 3 minutes of rest, and two of the protocols matched the total weight lifted between the short and long rest. The protocols that did more total work grew about 13 percent, and the ones that did less grew about 7 percent, whichever rest they used. The authors' conclusion: total volume, not the rest interval, drives growth.

So treat the rest timer as a tool for protecting your reps, not as a goal in itself. If you are building muscle while losing fat at the same time, this matters even more, because every good set counts; our body recomposition guide covers the rest of that plan.

Do compound lifts need more rest than isolation lifts?

As a starting point, yes. A squat, deadlift, bench press, overhead press or row moves more weight with more muscle than a curl or a lateral raise, so give the big lifts 2 to 3 minutes or more and the small ones 1 to 2 minutes.

Just do not shortchange the small lifts. In a 2011 study, 15 trained men did 5 sets with their 10 rep max on the bench press, the leg press, a machine chest fly and a leg extension, resting 1, 3 or 5 minutes. On the bench press, 3 and 5 minutes both beat 1 and tied with each other. On the other three, every step up from 1 to 3 to 5 minutes bought more reps, and the authors concluded that single joint and multi joint exercises followed similar patterns. A curl recovers faster than a squat, but it still recovers.

Order matters too. The ACSM's 2009 stand recommends large muscle group exercises before small ones and multi joint exercises before single joint ones, so your heaviest lifts get you at your freshest. Squats first, curls last. Your biceps will survive the wait.

Supersets: less waiting, the same work

A superset pairs two exercises back to back and rests after both. Done right, it is the closest thing a gym has to free time.

A 2025 meta analysis of 19 studies found supersets matched traditional sets for total reps and total weight lifted, finished sessions faster, and produced similar long term gains in strength, strength endurance and muscle size. The type of pair matters, though:

• Opposing muscles, like a bench press with a row, or a curl with a triceps pushdown: the best kind. In the meta analysis, these pairs held training volume up.
• The same muscle, like a bench press straight into a chest fly: these cut the weight you can lift, because the second exercise starts on a tired muscle. Fine as a finisher, costly for your main lifts.

Rest after the pair about as long as you would after a normal set of the harder exercise, and expect it to feel harder. The same review found supersets raised perceived effort and muscle damage, so you may need a little more recovery between sessions.

How to actually time your rest

1. Decide before the set. Write the rest next to the exercise, like 3 minutes on squats and 90 seconds on curls. Deciding halfway through is how 2 minutes becomes 7.
2. Start the clock when the weight goes down. Not when you have finished your sip of water, your text or your mirror check.
3. Use a timer, not a feeling. A timer keeps you honest in both directions: it stops you cutting heavy rests short, and it stops a light rest from quietly turning into a scroll.
4. Let your next set be the judge. If you fall more than two reps short of your target, rest 30 to 60 seconds longer next time. If every set is identical and easy, trim the rest or, better, add weight.
5. Warm up sets need less. A minute or so between light warm up sets is plenty. Save the long rests for your working sets. Our barbell plate calculator lays out a short warm up for any working weight.
6. Short on time? Superset, or drop a set. Since total work drives growth, cutting rest only helps if your reps hold up.

Here is what that looks like for a squat. Say your working sets are 5 reps at 100 kg (220 lb) and you rest 3 minutes. If your third set stalls at 3 reps, try 4 minutes next session before you lower the weight.

How much rest do beginners need?

Less than you might think, and it matters far less than showing up. The 2018 review found rests of 60 to 120 seconds looked sufficient for strength gains in untrained people. Pick a rest that lets your next set hit its reps with good form, and spend your effort on doing it at least twice a week: Canada's movement guidelines for adults call for muscle strengthening using the major muscle groups at least twice a week, and the US guidelines say at least 2 days a week. Our free four week plan builds that habit first.

Who should get advice first?

This guide is general information for healthy adults, not medical advice. If you have high blood pressure, a heart condition or another medical condition, talk to your doctor before heavy lifting. If you feel chest pain, dizziness or unusual shortness of breath between sets, stop and get checked.

Timing your rest in BryksBuilt

Full disclosure, this is our app.

• The rest timer starts itself, on iPhone and Android. Check off a set and the timer starts with that exercise's rest time. You set the rest for each exercise in 15 second steps in the workout builder, and a new exercise starts at 90 seconds. A rest bar counts down in your workout with a Skip button, and the app buzzes and dings when your rest is up.
• Supersets rest where you put the rest. Each exercise uses its own rest time, so give the first exercise of a pair no rest and put the rest on the second.

A stopwatch and some discipline will do all of this too. The app just starts the clock the moment you check off the set, so remembering to is one less job.