Carve
Time Under Tension (TUT)
Use controlled tempos (e.g., 2-3s eccentrics) while keeping sets near failure ( 1-3 RIR ); avoid excessively slow work that kills load and total Volume.
What is time under tension?
Time Under Tension (TUT) is the time a muscle spends under load in a set. Adjusting tempo changes TUT, influencing stimulus and fatigue without altering reps.
How does it work?
Longer eccentrics increase mechanical tension and control, aiding Mind-Muscle Connection. Moderate tempo raises metabolic stress slightly without sacrificing load. Very slow tempos can limit total work and recovery capacity. Effective TUT balances tension, load, and effort. Manipulating tempo can shift emphasis within a lift—pauses remove momentum and strengthen weak points, while smooth eccentrics improve joint positioning. TUT is most powerful when paired with steady Volume and proximity to failure, not as a standalone trick.
Practical application
Standardize a brisk but controlled tempo (about 2-3s down, controlled up) on key lifts. Add brief pauses to improve stability at weak points. Use slower eccentrics on accessories, not on your heaviest compounds. Keep sets close enough to failure to ensure high fiber recruitment. Track tempo notes so progress reflects true improvements. If form breaks at heavier loads, temporarily slow the eccentric or add pauses, then re-accelerate once control returns. Keep rest long enough (1-3 minutes on accessories, 2-4 on compounds) so tempo discipline does not collapse from fatigue.
- Baseline tempo~2-3s eccentrics, controlled concentric; pause as needed for stability.
- PlacementUse more tempo on accessories; keep compounds efficient to preserve load.
- EffortMaintain 1-3 RIR; don’t trade all load away for slow tempos.
Common mistakes
- Over-slowing every lift, slashing load and weekly work.
- Ignoring tempo drift, making progress hard to measure.
- Using tempo to chase soreness instead of quality tension and proximity to failure.