Rest longer than you think.
Short rest is the quietest way to lose reps. The working rule: about 3 minutes on heavy compound lifts, 90 seconds or more when training for muscle, 60-90 seconds on isolation work — with the evidence behind each number and the cases where the rule bends.
Written and maintained by Alex Tirim, founder of RepStack — these are the rest targets his own program runs on. Published June 10, 2026.
The answer
Rest 3–5 minutes for strength, 2–3 on hypertrophy compounds, 60–90 seconds on isolation work.
For heavy strength work — sets of 1–6 on the big lifts — rest 3 to 5 minutes. Training for muscle, rest at least 90 seconds on compound lifts and err toward 2–3 minutes when time allows; 60–90 seconds is enough on isolation exercises. The one clearly wrong answer is rushing big lifts: below about 60 seconds, the next set loses reps, and reps are the currency every progression rule trades in.
This is for healthy adults lifting with a log and deciding what the rest timer should say. It is not about circuit training or conditioning work, where short rest is the point, and it is not a peaking plan for a meet — that is your coach's call, not a web page's.
The rule
Set rest by what the next set has to do.
Strength — sets of 1–6
Compound (squat, bench, deadlift, press, row)
3–5 min
Heavy multi-joint sets need near-full recovery to express strength on the next set.
Muscle — sets of 6–12
Compound
2–3 min, never under 90 s
Short rest costs reps on every set after the first, and reps are the stimulus.
Muscle — sets of 10–20
Isolation (curls, raises, extensions)
60–90 s
Small muscles recover fast; past 90 s you are mostly resting your phone hand.
A true max attempt
Any
3–5+ min
One bad warm-up rest can cost a PR. Sit down. Wait. Then lift.
Ranges by RepStack, drawn from the sources cited below. They are programming defaults for straight sets, not laws — the exceptions get their own section further down.
Logbook example
Short rest does not feel like failure. It logs like it.
Same lifter, same bench press, same target of 4 working sets of 8–12 at 80 kg. The only programmed difference between these two sessions is the rest timer:
Session A — 60 s rest
80 kg x 12, 9, 7, 6
34 reps
Two sets fell below the 8–12 range. Under double progression, this session earns a hold — or a deload if it repeats.
Session B — 150 s rest
80 kg x 12, 11, 10, 9
42 reps
Every set inside the range. The next call is add reps, and the load jump is already in sight.
The first set is identical — 60 seconds is plenty of rest before set one, because you have not done anything yet. The bill arrives on sets two through four: 8 reps lost to the clock, at the same weight, with the same effort. Run these sessions through a double progression rule and the difference compounds: Session B is one session from earning a load jump, while Session A reads as a stall and starts the deload countdown. Nothing about the lifter changed. The rest did.
Why this works
The research keeps siding with the longer option.
The cleanest single trial is Schoenfeld and colleagues' 2016 randomized trial: 21 resistance-trained men, 8 weeks, identical total-body programs of 3 sets of 8–12 reps, with one group resting 1 minute and the other 3 minutes. The 3-minute group gained more strength and more muscle thickness. One study in young trained men is not the final word — but it directly tested the question and the longer rest won on both outcomes.
Zooming out, a 2024 Bayesian meta-analysis by Singer and colleagues found muscle growth occurs across a broad range of rest lengths, with a small advantage for longer rest — clearest above 60 seconds, and uncertain beyond about 90 seconds. An earlier 2017 systematic review by Grgic and colleagues read the same way: short rest can work for newer lifters, but trained lifters tend to do better with more. For pure strength, de Salles and colleagues' 2009 review is the basis of the standard 3–5 minute recommendation for heavy multi-joint work.
Read together, the confidence label is moderate: the direction is consistent, the exact doses are still argued about. The mechanism, though, is visible in any honest log and needs no lab: shorter rest means fewer reps at a given load on every set after the first. Whether you chase strength or size, you are paying for the workout in reps — and rest is what the reps cost.
When it fails
Four cases where the table is wrong.
Your breathing is the limit, not the muscle
After a hard set of high-rep squats or Romanian deadlifts, your legs may be ready before your lungs are. Rest until your breathing settles, even if the timer finished a minute ago. The clock serves the next set, not the other way around.
You have 45 minutes, not 90
Pair non-competing exercises — bench with rows, curls with triceps work — and alternate them. Each muscle still gets 3+ minutes between its own sets while the session length is nearly halved. This is the honest shortcut; cutting rest is the dishonest one.
The isolation lift recovered at 45 seconds
Lateral raises and curls do not need a 3-minute protocol. If the next set hits the target reps, the rest was long enough. Spending compound-lift rest on isolation work just makes the session longer.
You are deliberately training short on rest
Rest-pause, drop sets, and myo-reps shorten rest on purpose and adjust load and volume to compensate. They are different tools with their own rules — not evidence that cutting rest on straight sets is free.
Common mistake
Resting by feel.
"I rest until I feel ready" sounds like body wisdom and behaves like a coin flip. Untimed rest drifts to 45 seconds on the exercises you want finished and 4 minutes on the ones where your phone is interesting — and neither number was a decision. The fix costs nothing: pick the rest before the set, start a timer when the bar goes down, and let the timer end the argument. Your log only means something if the conditions behind it are roughly repeatable, and rest is one of the three conditions you fully control. The other two are load and effort.
How RepStack handles this
Every exercise carries its own rest target.
In RepStack, rest is a per-exercise setting, not an app-wide one. Check off a set and the countdown starts on its own, runs in the background, and buzzes when it hits zero. These are the actual defaults the built-in full-gym programs ship with, straight from the program templates in the app — the home-gym and bodyweight variants trim them to match their loads:
| Program goal | Compounds | Isolation |
|---|---|---|
| Muscle (8–12 reps) | 90 s | 60 s |
| Strength (3–5 reps) | 180 s | 90 s |
| Consistency (8–10 reps) | 120 s | 60 s |
| Recomposition (6–8 reps) | 90 s | 45 s |
An honest note on those defaults: 90 seconds on muscle-goal compounds is the floor of the evidence-supported range, not the middle. We chose it so a 4-day program finishes inside an hour, because the program you complete beats the program you abandon. Every slot's rest is editable — and this page's own advice is to push the big lifts toward 2–3 minutes when your schedule allows. Exercises added outside a program default to 120 seconds.
The timer is free, runs offline like the rest of the log, and with Pro it stays visible on the lock screen and Dynamic Island so you are not unlocking your phone between sets — which is usually where the 4-minute scroll begins.
Free on iOS — the rest timer is not paywalled.
The bottom line
If you must cut something, cut an exercise — not the rest.
A shorter session with full rest beats a full session with starved rest, because the log keeps the reps and the reps drive the progression. Put 3 minutes on the compound lifts, 60–90 seconds on the isolation work, pair exercises when the clock is against you, and stop treating rushed rest as extra effort. It is not effort. It is just fewer reps wearing effort's clothes.
Sources
What this page is based on.
- Schoenfeld et al. 2016 RCT — 3-minute vs 1-minute rest periods in resistance-trained men
- Singer et al. 2024 Bayesian meta-analysis — inter-set rest interval duration and muscle hypertrophy
- Grgic et al. 2017 systematic review — short vs long inter-set rest intervals and hypertrophy
- de Salles et al. 2009 review — rest interval between sets in strength training
Spotted an error? Email [email protected]. Factual errors are corrected within 48 hours, with a visible note on this page.