Single-Leg Extension

The leg extension one leg at a time, which shows up any difference between sides.

Single-Leg Extension, illustrated

How to do it

Setup

In the leg extension machine, one shin behind the roller, the other foot resting.

Steps

  1. Extend the single leg to straight.
  2. Pause at the top.
  3. Lower under control; finish the leg, then switch.

Common mistakes

Half the machine's two-leg weight is still too much: singles run lighter than half. Hips twisting toward the working leg: square on the seat. Kicking: smooth to the top.

Breathing

Exhale extending, inhale lowering.