Training / Technique ยท
Time Under Tension: Slower Is Not Always Better
Time under tension describes how long a muscle works during a set. It is useful, but it does not replace load, technique, and progression.
The phases of a repetition
A repetition includes the eccentric phase, an optional pause, the concentric phase, and the transition. A 3-1-1 tempo means three seconds down, one paused, and one up.
Counting tempo can help prevent bouncing and rushed movement.
When slowing down helps
A controlled eccentric increases attention to position and can make a lighter load challenging.
Extremely slow repetitions reduce the reps you can perform and are not automatically better than a controlled natural tempo.
Use tempo in progression
Keep tempo consistent enough to compare sets. Changing load, reps, and speed together makes progress harder to read.
Choose a tempo that supports control without causing pain or unnecessary stiffness.
Frequently asked questions
Does more time under tension mean more growth?
Not automatically. Effort, volume, technique, recovery, and progression all matter.
Must I count every second?
No. It can help on selected exercises; often a controlled, repeatable rhythm is enough.