How it works

Take a set to momentary failure. Rack the weight, rest roughly ten seconds, then perform another single near-maximal rep. Repeat — single rep, brief rest, single rep — until no further rep is possible even after the pause. The set is now genuinely complete across all three stages of failure.

Where it comes from

According to Wikipedia, Mike Mentzer — a former Mr. Universe — achieved his lifetime best condition from rest-pause, which the article describes as an old system of lifting involving single-rep maxima interspersed with brief ten-second rest periods. It sits within the broader Mentzer method.

When to use it

Rest-pause is for advanced trainees who have mastered one set to failure and need a way to push past a plateau. It is demanding — both on the muscle and on recovery — and should be used sparingly, on a few exercises, with a spotter or safety catches.

Safety

Because rest-pause extends a set past normal failure, fatigue is high and form can break. Use it only with safe failure practice — safety pins, a competent spotter, and exercises where you can safely fail. Plan extra recovery afterward.