Definition
The full breakdown. What it is, why it matters, how to use it.
Time under tension is the duration a muscle stays under load in a working set. A set of 8 reps at a 2-second eccentric, 1-second concentric tempo takes about 24 seconds. Hypertrophy responds well to 30–70 seconds of TUT per set; under 20 seconds favors strength, over 70 favors endurance.
Q & A
Real Questions
Question 01
Does slowing reps build more muscle?
Slowing the eccentric (lowering phase) to 2–4 seconds increases TUT and mechanical tension without sacrificing load — a reliable hypertrophy lever.
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