How long should you rest between sets?

The short answer

For most people training to build muscle or strength, the right rest between hard sets is longer than it feels like it should be: around 2 to 3 minutes for big compound lifts, 90 seconds to 2 minutes for smaller exercises, and 3 to 5 minutes between genuinely heavy sets.

These are starting points. The best test of whether a rest was long enough is the next set: if you can’t get close to the reps you planned at the weight you planned, you didn’t rest long enough. If you are ready to go well before the timer ends and your reps hold up, your rest can probably come down a little.

Two ideas sit behind every number in that table. The first is that rest is not wasted time. It is when your muscles restore the energy and clear the fatigue that let you perform the next set well, and the quality of each set is where most of the training effect comes from. The second is that shorter rest is not automatically better training. Cutting rest makes a session feel tougher, but mostly because you lose reps, not because your muscles get a stronger signal to grow.

The rest of this guide explains where those ranges come from and how to adjust them for your own training, from the lifts you do to how long your session can run.

Why rest length matters

A hard set uses up your muscles’ fastest energy supply and leaves fatigue behind: for a while your muscles can’t produce as much force, your breathing and heart rate are up, and the next set feels heavier than it is. Rest is how much of that you clear before you go again.

That fast energy store, phosphocreatine, takes a few minutes rather than a few seconds to refill, and the deeper fatigue from heavy sets of big lifts takes longer still. If you start the next set before that recovery has happened, the cost shows up straight away: fewer reps at the same weight, or less weight for the same reps.

Illustration: the same bench session, two rest lengths. Say your first set of bench press is 80 kg for 10 reps. With three minutes of rest, a typical intermediate lifter might manage 9 or 10 on the second set and 8 or 9 on the third. With one minute, the same lifter might get 7, then 5 or 6. That is a gap of five or six reps of hard work at the same weight, in every session, for the same number of sets. These numbers are made up to show the pattern, not measured from a study.

That cost matters because both muscle growth and strength depend heavily on how much quality work you do. The 2024 review covered in the next section came to the same view about the mechanism: the small advantage it found for longer rest was most plausibly explained by the extra work lifters could do with it, and the loss of work from short rests seems to level off beyond about 90 seconds.

There is a second, quieter effect. When you rest too little, hard sets turn into a test of your breathing rather than your muscles, especially on squats, deadlifts and lunges. The set ends because you are out of breath, not because the target muscle is close to failure, and a set that stops short of the muscle’s limit does less for it.

None of this means more rest is always better. Past a certain point you recover very little extra, and the session just gets longer. The goal is to rest long enough that the next set is a good one, and no longer than that.

What the research shows

The research on rest periods is smaller than the research on sets and reps, but it points fairly consistently in one direction: for people with some training behind them, longer rest tends to beat very short rest.

The study most people cite is a 2016 trial by Brad Schoenfeld and colleagues. Twenty-one young men with lifting experience trained three times a week for 8 weeks, doing 3 sets of 8 to 12 reps on seven exercises per session. The only difference between the two groups was rest: one took 1 minute between sets, the other 3 minutes. The 3-minute group gained significantly more strength on both the squat and the bench press, and their front thigh muscles grew significantly more, with a trend in the same direction for the triceps.

A 2018 systematic review by Jozo Grgic and colleagues pulled together 23 studies and 491 participants on rest and strength. Its conclusions were nuanced: strength still improves with short rests of under 60 seconds, but trained lifters seem to need more than 2 minutes to get the most from their training, while for beginners 60 to 120 seconds looked like enough.

The most recent analysis, a 2024 review by Alec Singer and colleagues (Schoenfeld among them), pooled 19 measurements of muscle growth from 9 randomized studies. The results overlapped a lot between rest lengths and varied widely between studies, but they suggested a small benefit to resting longer than 60 seconds, with no clear further difference once rest went past about 90 seconds. Training to failure or stopping short of it did not change that picture.

Older guidance runs shorter. The American College of Sports Medicine’s 2009 position stand recommended 3 to 5 minutes of rest for heavy strength work but only 1 to 2 minutes for muscle-building sets, and under 90 seconds for muscular endurance. The newer evidence mostly backs the strength advice and suggests the muscle-building figure was on the short side, at least for big lifts.

Put together: very short rests, around a minute, cost you something on most lifts; somewhere past 90 seconds to 2 minutes the returns flatten for muscle growth; and heavy strength work benefits from longer still.

How long to rest to build muscle

If your main goal is muscle, the research supports a simple rule: rest at least 90 seconds on most sets, and 2 to 3 minutes on big compound lifts.

Compound lifts get more rest because they tire out more of you. A set of 10 squats works your quads, glutes and back and leaves you breathing hard. A set of 12 curls works one small muscle group and barely raises your heart rate. Both need rest, but the squat needs more before you can match the first set.

Compound lifts: 2 to 3 minutes. Squats, deadlifts, bench and overhead presses, rows, pull-ups, lunges and leg presses. This is where short rest costs the most reps, and where the 2016 study found its clearest difference in muscle growth, in the thighs.

Isolation exercises: about 90 seconds to 2 minutes. Curls, triceps extensions, lateral raises, leg curls and extensions, calf raises. These recover faster, and the 2024 review’s finding that rest beyond 90 seconds added little fits them especially well.

Higher-rep sets need a little more than you’d think. A set of 15 to 20 reps leaves a lot of local fatigue, even on a small muscle. If your reps fall apart on the second set, give it another 30 seconds.

A common worry is that longer rest means less pump and so less growth. The pump and the burn from short rests are real sensations, but the research has not found that chasing them with shorter rest builds more muscle. If anything, it costs you work.

If you do need to rest less, because the gym is busy or you are short on time, one sensible approach is to add a set to make up for the reps you lose. That keeps your total amount of hard work closer to what longer rest would have given you, and the total amount of hard work seems to be what matters most.

Finally, rest only matters after hard sets. A set stopped far from failure barely needs rest, but it also barely counts toward your weekly volume. The guide to sets per muscle group covers what makes a set hard enough to count, and how many of them most people need each week, and Arclift for bodybuilding shows how the app adds them up per muscle.

How long to rest for strength

Strength training is where long rests matter most. When the goal is to lift as much as possible for a few reps, every set needs your best effort, and starting a heavy set tired is both less productive and less safe.

Heavy sets of 1 to 5 reps: 3 to 5 minutes. This matches the long-standing guidance for heavy strength work, and the 2018 review’s finding that trained lifters need more than 2 minutes to get the most strength from their training. For a top set of squats or deadlifts near your max, 5 minutes is not excessive.

Lighter back-off sets: 2 to 3 minutes. After the heaviest set, many programs drop the weight for a few more sets. These still need real rest, but not as much as the top set.

Accessory work: 90 seconds to 2 minutes. The rows, presses and isolation work that support your main lifts can follow the muscle-building ranges above.

Beginners can get away with less. The same review found that untrained people gained strength well with 60 to 120 seconds of rest. Early on, the weights are lighter in absolute terms and take less out of you, and practicing technique matters more than squeezing out the last rep. As the weights climb, rest should climb with them.

Heavy training also involves something beyond the muscle: your focus. Many lifters find they need the full rest not to catch their breath but to feel ready to grind out a near-maximal set with good form. That is a valid reason to take the extra minute.

If you train with RPE, rest is one of the things that keeps a planned RPE 8 at RPE 8. Cut it short and the same weight lands at RPE 9 or 9.5, which throws off the plan for the rest of the session. The RPE calculator shows how a target RPE translates into a weight, and the one-rep max calculator gives you the percentages behind heavy sets.

Rest times by exercise

Here is how the ranges above apply to common exercises when you train for muscle and strength together, the way most people do. Use the higher end for your heaviest sets and for the first exercise of the day.

Three things shift these numbers in practice.

Where the exercise sits in the session. The first big lift of the day usually deserves the longest rest, because it is the heaviest work you will do. Later exercises, done with less weight and often for more reps, can sit at the low end of their range.

One side at a time. For lunges, split squats, one-arm rows and other single-side exercises, the time you spend on the second side doesn’t count as rest, because your breathing and grip are still working. Start the rest after both sides are done, not after each one.

How you feel on the day. After a poor night’s sleep, in a hot gym, or late in a hard week, an extra 30 seconds is a cheaper fix than a ruined set. Rest is one of the easiest variables to adjust on the fly, so use it.

Fitting long rests into a short session

The most common reason people cut rest is time. If you have 45 minutes and five exercises, three-minute rests can look impossible. There are better fixes than squeezing every rest down to a minute.

Pair exercises that don’t compete. Alternate two exercises that use different muscles: a press with a row, a lunge with a core exercise, a curl with a triceps extension. While one muscle group rests, the other works, so each still gets two or three minutes between its own sets while the clock keeps moving. Pairing works best when neither exercise leaves you out of breath for the other; heavy squats and heavy deadlifts are not a pair. Research on this kind of pairing is limited, so treat it as a practical tool rather than a proven upgrade.

Use shorter rests where they cost least. Keep the long rests for your first one or two compound lifts, and run the isolation work at the short end of its range. That is where a minute less rest costs the fewest reps.

Cut a set, not the rest. If something has to give, dropping one set of a lower-priority exercise usually costs less than turning every remaining set into a rushed one.

Do something useful during the rest. Load the next weight, note the set, set up the next station, or stretch a muscle you are not about to use. The plate calculator can work out the next set’s plates before your rest is up.

Don’t let rest drift. The opposite problem is just as common: rests that quietly stretch to five or six minutes while you scroll your phone. A session with drifting rests runs long, and the long gaps can leave you cold for your later sets. A timer that starts on its own when you finish a set keeps both problems in check.

How to set your own rest times

The ranges in this guide are good defaults, but the best rest time for you is something you can work out from your own sets in a couple of weeks.

Step 1: start with the defaults. Use 2 to 3 minutes for compound lifts and about 2 minutes for isolation work, and keep them the same for two weeks so you have something to compare against.

Step 2: watch the drop-off between sets. Use the same weight for all your working sets of an exercise and note the reps. What done looks like: your second set lands within one or two reps of your first, and your last set within two or three. That pattern says your rest is long enough, and you can leave it alone.

Step 3: if you’re behind, add 30 seconds. If your reps fall by three or more from the first set to the second, or your sets keep ending because you’re out of breath rather than because the muscle gave out, add 30 seconds to that exercise’s rest and check again next session.

Step 4: if you’re always ready early, trim 30 seconds. If you consistently feel ready a minute before the timer ends and your reps don’t drop, you can shorten the rest for that exercise. Most people find isolation work tolerates this better than compound lifts.

Step 5: keep it consistent. Once a rest works for an exercise, keep it. Changing rest from week to week makes your log harder to read, because a drop in reps might mean you’re tired or might just mean you rested less. Consistent rests are what make progressive overload visible: when the reps go up at the same rest, you know you got stronger.

If your reps drop across the board for a week or two even with full rest, the problem probably isn’t rest at all. That pattern usually means accumulated fatigue, and the deload guide covers what to do about it.

Mistakes and myths about rest

Resting by feel and guessing the time. Most people are poor judges of how long they have rested. Three minutes of chatting or scrolling can turn into six, and a rushed minute can feel like two. Timing your rests is the single easiest fix in this guide.

Using the same rest for everything. One fixed minute for every exercise leaves your squats under-rested and wastes time on your calf raises. Set rest per exercise, using the table above as a starting point.

Thinking shorter rest means a better workout. A session with short rests feels harder, and you leave sweatier and more out of breath. For building muscle and strength, that feeling isn’t the goal; the quality of your sets is. Short rests have a place in conditioning and circuits, but they aren’t a shortcut to growth.

Resting until your heart rate drops to a set number. Heart rate recovery is a rough guide to how out of breath you are, but it says little about whether your muscles have recovered, and it varies a lot from person to person. The reps on your next set are a better measure.

Rushing the main lifts, then adding junk sets. Hurrying through the important sets and then doing extra ones at the end to feel like you’ve done enough gets the order backwards. Rest properly on the sets that matter, and stop when the planned work is done.

Giving warm-ups full rest. Warm-up sets are meant to prepare you, not tire you. Rest only as long as it takes to load the next weight, and save the full rest for your working sets. The warm-up sets calculator lays out a ramp for any working weight.

Skipping the timer on heavy days because you feel fine. Adrenaline makes a heavy day feel easier between sets than it is. The timer protects your later sets from your early enthusiasm, which is exactly when a short rest costs the most.

Timing rest in Arclift

Arclift is the app I build, so read this section knowing I have a stake in it. It is also the part of this guide that the app handles for you, and all of it is free.

The rest timer starts on its own. When you tick off a set, its rest starts counting down right below the set it follows, so there is no timer to remember. You can add or take away 15 seconds, or skip the rest, without leaving the set list.

Every exercise has its own rest. New exercises start at 2 minutes, and you can pick any length from 5 seconds to 10 minutes in 5-second steps, or turn the timer off. A single set can override its exercise’s rest, for example a longer one after a heavy top set, and both are saved in your workout templates, so your squats always get their three minutes and your curls their ninety seconds.

It keeps working with the screen locked. The countdown keeps running when you leave the app or lock your phone, and an alert tells you when the rest is over. On the Lock Screen and in the Dynamic Island, a Live Activity shows the time left and what’s up next, with a button that logs the next set without opening the app. The logging features cover the rest of how a set gets recorded.

A missed alert is still visible. If a rest runs out while you’re not looking, the set list keeps counting the time since it ended, for up to five minutes, so you can see how far over you went instead of guessing.

Consistent rests, readable progress. Because each exercise keeps the same rest from one session to the next, your numbers stay comparable from week to week, and with Arclift Pro the statistics and progression coach turn them into progress charts and next-session targets.

What it doesn’t do. Arclift has no Apple Watch app, so the timer lives on your phone and Lock Screen only, and it has no superset mode, so pairing exercises means alternating them by hand. Hevy’s Apple Watch app runs rest timers from the wrist, and both Hevy and Strong support supersets. The comparison of Hevy and Strong and how Arclift compares with Strong cover where each app is stronger.

What the research can’t tell you yet

The evidence on rest is useful but thin in places, and it helps to know where.

There aren’t many studies. The 2024 review found only 9 randomized studies that compared rest lengths for muscle growth while keeping everything else the same. That is a small base for precise numbers, which is why the advice in this guide comes as ranges rather than single figures.

Most participants are young men. As with most training research, women, older lifters and people training around busy lives are under-represented, and they may recover differently between sets.

Rest and total work are tangled together. In most studies, the longer-rest group also ends up doing more work over the training period, because it manages more reps. That makes it hard to tell whether rest itself matters or just the extra work it allows. The 2024 review leans toward the work, which is why adding a set when you must rest less is a reasonable fix.

Exercises differ, but studies rarely test that. Most trials use the same rest for every exercise in a program. Whether a heavy deadlift needs a much longer rest than a lateral raise to build the same amount of muscle is mostly inferred from how people perform within a session, not measured over months.

Real gyms aren’t labs. In a study, rest is timed to the second. In real training, rest stretches and shrinks with waiting for equipment, chatting and checking your phone. The research tells you what a rest of a given length can do when it really is that long.

So the honest summary: rest longer than a minute on most sets, 2 to 3 minutes on big lifts, and longer still for heavy strength work, then let the reps in your own log tell you whether to adjust. Timing your rests, rather than guessing at them, is what makes that log worth reading.