Rest

What It Is

The time you take to recover between sets.

Why It Matters

Past about 90 seconds, how long you rest makes little to no difference to the strength and muscle you build. What a full rest buys you is recovery: enough to keep your load and repetition quality steady from set to set, which is what protects your total training volume.

Resting under 60 seconds reduces the repetitions you can complete in later sets, lowering volume and blunting gains unless you add sets to compensate. For hypertrophy, the benefit of longer rest plateaus beyond roughly 90 seconds. Heavier strength work is the exception: trained lifters often need two to three minutes to recover enough to express full force.

Use 90 seconds as your baseline. If your performance drops across sets, rest longer. The goal is quality on every working set, not a specific number on the clock.

• Grgic, J. et al. (2018). Effects of Rest Interval Duration in Resistance Training on Measures of Muscular Strength: A Systematic Review. Sports Medicine. doi.org/10.1007/s40279-017-0788-x
• Singer, A. et al. (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. doi.org/10.3389/fspor.2024.1429789