How Long Should You Rest Between Sets?

EFWA KNOWLEDGE HUB · PERSONAL TRAINING & TRAINING SCIENCE

By Dr Mert Eray Onen, Founder & Academic Director, EFWA · ORCID 0000-0001-8510-7293

Estimated reading time: 6 minutes

Rest long enough for the next set to serve its purpose. Heavy, technically demanding strength work often needs two to three minutes or more; lighter accessory work may need less. The right interval is not the shortest time a client can tolerate, but the shortest time that preserves the required repetitions, load, movement quality and intent.

Rest between sets is easy to treat as dead time. In reality, it is a programme variable. If the interval is too short, repetitions may fall, technique may deteriorate and the load may need to be reduced. If every interval is unnecessarily long, the session becomes inefficient and may be harder to deliver in a busy coaching environment.

The useful question is therefore not “Is 60 seconds or three minutes best?” It is “Recovered enough for what?”

Why does rest length change the next set?

A demanding set temporarily reduces the capacity to repeat the same work. Several processes contribute, including incomplete phosphocreatine restoration, metabolite accumulation, cardiorespiratory demand and central or local fatigue. Their relative importance depends on the exercise, load, number of repetitions and proximity to failure.

Multi-joint exercises performed with heavy loads generally create a stronger case for longer recovery than a low-load isolation exercise. A set stopped with several repetitions in reserve may also require less recovery than a set taken very close to momentary failure. The clock matters, but it does not describe all of this context.

How long should you rest for strength?

When the priority is producing high force with a heavy load, longer intervals are usually sensible. Systematic-review evidence indicates that strength can improve with both short and long rest periods, but trained people may gain more strength when rests exceed two minutes. The practical explanation is straightforward: more recovery helps preserve load, repetitions and technique across later sets.

For a priority squat, press or pull, two to three minutes is a reasonable starting range rather than a rigid rule. Some experienced lifters performing very heavy sets may need longer. A novice using a moderate load and stopping well before failure may be ready sooner. Readiness should be judged against the next set’s purpose, not against impatience or a generic timer.

Do short rests build more muscle?

Short rests can create a stronger burning sensation and make a session feel harder, but discomfort is not a direct measure of hypertrophy. A 2024 systematic review with Bayesian meta-analysis found that muscle growth occurred across a wide range of rest intervals. The results suggested a small potential advantage for rests longer than 60 seconds, probably because they help preserve training volume, while evidence for an additional benefit beyond roughly 90 seconds remained uncertain.

This does not make short rests ineffective. They can be useful when equipment access is limited, time efficiency matters or an exercise has a low technical cost. The trade-off is that the trainer must watch whether repetitions, load or execution fall more than intended. Adding extra sets simply to replace work lost through rushed recovery may remove the time saving.

What about muscular endurance and circuits?

Shorter recovery may be deliberately included when repeated effort under incomplete recovery is part of the goal. Circuit formats can also make efficient use of time by alternating exercises. However, alternating movements is not the same as eliminating recovery: local muscles may rest while the cardiovascular system continues working.

A resistance circuit can improve strength, but its design should match the stated goal. If fatigue forces substantial load reductions and movement quality declines, the session may emphasise work capacity more than maximal-strength performance. Neither outcome is inherently better; the programme should name the intended adaptation honestly.

The EFWA RESET framework

RESET is an EFWA educational framework for choosing and adjusting inter-set rest. It turns a fixed timer into a repeatable coaching decision.

R — Result

Define the main result for the exercise: strength, hypertrophy, power, muscular endurance, technique practice or general conditioning. A power set must begin with enough recovery to preserve movement velocity; a conditioning station may intentionally begin under partial recovery.

E — Exercise

Consider muscle mass involved, load, stability demand and technical complexity. A heavy front squat normally needs more recovery than a cable curl performed with a moderate effort.

S — Set effort

Estimate how close the previous set came to failure. The closer the set was to the person’s current limit, the stronger the case for more rest before repeating the task.

E — Execution check

Compare the next set with the plan. Did repetitions collapse? Did bar speed, range of motion or control change? A repeated drop suggests that the interval, load or set target needs adjustment.

T — Time available

Work within the session’s real constraints without pretending they do not exist. Pairing non-competing exercises, reducing low-priority volume or using clear timers can improve efficiency without rushing key sets.

A worked example: building a 45-minute strength session

A client’s main goal is to improve squat strength, but the session must finish in 45 minutes. The trainer gives the squat three working sets with approximately three minutes between sets. During those intervals, the client performs no demanding circuit; the priority is readiness for the next squat.

Later, a row and a press are alternated. Each movement receives about two minutes before it repeats, even though the client is not sitting still for the entire interval. Smaller accessory exercises use 60–90 seconds, provided the target repetitions and technique remain stable.

If the second squat set is unexpectedly slow and loses repetitions, RESET prompts a decision: extend the rest, reduce the load or revise the target. It does not prompt the trainer to praise fatigue for its own sake.

What is established, emerging and interpretive?

• Established evidence: longer rests generally help preserve repetitions and load across demanding resistance-training sets; both short and long intervals can support adaptation.
• Emerging evidence: current hypertrophy research suggests a small benefit from avoiding very short rests, but the optimal upper threshold remains uncertain and may differ by exercise and training status.
• EFWA educational position: prescribe an initial interval, then adjust it using performance and movement quality rather than the clock alone.

Professional application

Personal trainers should select rest intervals that suit the client’s health, experience, goals and environment. Unusual breathlessness, chest discomfort, faintness or other concerning symptoms are not problems to solve by changing the timer; stop the session and follow the appropriate emergency or referral process.

Rest intervals sit within a larger programme. See EFWA’s guides to progressive overload and warm-up design, explore our Personal Trainer education routes, or browse the EFWA Knowledge Hub.

Evidence limitations

Rest-interval studies use different exercises, loads, training histories and outcome measures. Many interventions are short and include relatively small samples. Evidence is stronger for conventional resistance training in healthy adults than for every older, clinical or sport-specific population. Exact timings should therefore be treated as starting points that require observation and adjustment.

References

1. Currier, B. S., D’Souza, A. C., Fiatarone Singh, M. A., Lowisz, C. V., Rawson, E. S., Schoenfeld, B. J., Smith-Ryan, A. E., Steen, J. P., Thomas, G. A., Triplett, N. T., Washington, T. A., Werner, T. J., & Phillips, S. M. (2026). American College of Sports Medicine position stand: Resistance training prescription for muscle function, hypertrophy, and physical performance in healthy adults: An overview of reviews. Medicine & Science in Sports & Exercise, 58(4), 851–872. https://doi.org/10.1249/MSS.0000000000003897
2. Grgic, J., Schoenfeld, B. J., Skrepnik, M., Davies, T. B., & Mikulic, P. (2018). Effects of rest interval duration in resistance training on measures of muscular strength: A systematic review. Sports Medicine, 48(1), 137–151. https://doi.org/10.1007/s40279-017-0788-x
3. Schoenfeld, B. J., Pope, Z. K., Benik, F. M., Hester, G. M., Sellers, J., Nooner, J. L., Schnaiter, J. A., Bond-Williams, K. E., Carter, A. S., Ross, C. L., Just, B. L., Henselmans, M., & Krieger, J. W. (2016). Longer interset rest periods enhance muscle strength and hypertrophy in resistance-trained men. Journal of Strength and Conditioning Research, 30(7), 1805–1812. https://doi.org/10.1519/JSC.0000000000001272
4. Singer, A., Wolf, M., Generoso, L., Arias, E., Delcastillo, K., Echevarria, E., Martinez, A., Androulakis Korakakis, P., Refalo, M. C., Swinton, P. A., & Schoenfeld, B. J. (2024). Give it a rest: A systematic review with Bayesian meta-analysis on the effect of inter-set rest interval duration on muscle hypertrophy. Frontiers in Sports and Active Living, 6, 1429789. https://doi.org/10.3389/fspor.2024.1429789