Knee Tuck (Stability Ball)

How to do it

1. Set up in a plank with hands under the shoulders and the tops of your feet or shins resting on a stability ball.
2. Brace the core and hold a straight line from head to heels before initiating any movement of the ball.
3. Roll the ball inward by drawing both knees toward your chest, keeping the hips low and level as the ball travels forward.
4. Pause briefly in the tucked position with the core fully engaged, then extend the legs back out to the plank.
5. Exhale as you tuck the knees in and inhale as you roll the ball back out to the starting plank.
6. Keep the hips from piking upward during the tuck; letting them rise is the most common fault in this movement.

Muscles worked

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