- Aug 14, 2018
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Rest periods are the least programmed variable in most gym programs — people rest until they feel ready, or until the song changes, or for exactly as long as it takes to check their phone. The research suggests the choice matters more than that casual approach implies, at least for some goals.
The study that shifted opinion is Schoenfeld and colleagues (Journal of Strength and Conditioning Research, 2016): trained young men followed the same program for eight weeks resting either one minute or three minutes between sets. The three-minute group gained significantly more strength and showed greater increases in muscle thickness at several sites. The proposed explanation is straightforward — longer rests preserve load and reps on later sets, and total effective work wins. A later systematic review (Grgic and colleagues, 2017) added nuance: for multi-joint heavy training, rests of two minutes or more look favourable for strength; for single-joint and isolation work, shorter rests (around 60 seconds) performed about as well in several studies, likely because the absolute fatigue is lower and the muscle is the limiter rather than the whole system.
Hypertrophy data alone is a bit murkier than the strength data, because much of the apparent benefit of long rests is really a volume effect — if short rests cut your reps in half, of course growth suffers; studies that equate for total work narrow the gap. There's also a newer practical wrinkle: techniques like rest-pause and drop sets deliberately exploit short rests, and time-efficient methods like supersetting antagonist muscles let you rest each muscle plenty while the session clock moves faster. For lifters training in a lunch hour, that's often the real solution — the research case is for resting the muscle, not for standing around.
Sensible summary from the evidence: heavy compound lifts generally deserve 2–5 minutes when strength or hard hypertrophy sets are the goal; isolation work tolerates 60–120 seconds fine; and if a rest period is so short that your performance falls off a cliff set to set, it's too short regardless of what a study says. Auto-regulating by performance — starting the next set when you can actually hit the target — captures most of it.
How do you handle rest periods — timed, by feel, or supersets to save the clock? Has anyone found their progress changed noticeably just from resting longer on the big lifts?
The study that shifted opinion is Schoenfeld and colleagues (Journal of Strength and Conditioning Research, 2016): trained young men followed the same program for eight weeks resting either one minute or three minutes between sets. The three-minute group gained significantly more strength and showed greater increases in muscle thickness at several sites. The proposed explanation is straightforward — longer rests preserve load and reps on later sets, and total effective work wins. A later systematic review (Grgic and colleagues, 2017) added nuance: for multi-joint heavy training, rests of two minutes or more look favourable for strength; for single-joint and isolation work, shorter rests (around 60 seconds) performed about as well in several studies, likely because the absolute fatigue is lower and the muscle is the limiter rather than the whole system.
Hypertrophy data alone is a bit murkier than the strength data, because much of the apparent benefit of long rests is really a volume effect — if short rests cut your reps in half, of course growth suffers; studies that equate for total work narrow the gap. There's also a newer practical wrinkle: techniques like rest-pause and drop sets deliberately exploit short rests, and time-efficient methods like supersetting antagonist muscles let you rest each muscle plenty while the session clock moves faster. For lifters training in a lunch hour, that's often the real solution — the research case is for resting the muscle, not for standing around.
Sensible summary from the evidence: heavy compound lifts generally deserve 2–5 minutes when strength or hard hypertrophy sets are the goal; isolation work tolerates 60–120 seconds fine; and if a rest period is so short that your performance falls off a cliff set to set, it's too short regardless of what a study says. Auto-regulating by performance — starting the next set when you can actually hit the target — captures most of it.
How do you handle rest periods — timed, by feel, or supersets to save the clock? Has anyone found their progress changed noticeably just from resting longer on the big lifts?