Use double progression: increase reps, then increase weight

Train within a rep range (e.g., 8–12); when you hit the top of the range on all sets, add weight.

Why it works

Double progression provides a systematic and conservative overload trigger. By setting both a volume target (top of rep range on all sets) and a load target (weight increase upon reaching it), it ensures progression happens only when performance genuinely supports it. This avoids the common error of adding load prematurely, which increases injury risk without providing greater adaptive stimulus.

How to do it

1. Choose a rep range appropriate to the goal (e.g., 8–12 for hypertrophy; 3–5 for strength).
2. Train at the same weight each session until you can complete all sets at the top of the range.
3. When you hit the top of the range on all sets in two consecutive sessions, increase the load by 2.5–5%.
4. Drop back to the bottom of the rep range with the new weight and repeat the cycle.

Evidence

Double progression is a widely used practitioner protocol built on the well-established principle that volume-load progression drives muscle and strength adaptation. Formal RCTs of this specific schema vs. alternatives are limited. (mechanistic)

Optimal rep ranges for hypertrophy vs. strength are supported by research but not with precision; individual response varies, and ranges serve as useful heuristics.

Common mistake

Adding weight after completing the rep range in one session rather than two, which moves load faster than adaptation supports and produces stagnation or injury.