Stability Ball Knee Tuck
CoreStrengthIntermediateStability ball
A plank-position knee tuck with the feet on a stability ball, rolling the ball in under the hips to load the abs dynamically.
How to do it
- Start in a high plank with both shins or the tops of the feet on top of a stability ball.
- Hands are under the shoulders, body in a straight line.
- Brace the core and pull the ball toward the chest by tucking the knees in.
- Roll it back out by extending the legs fully back to the plank position.
- Repeat for the recommended number of repetitions.
Tips
- Hips do not pike up; keep a level trunk throughout the roll-in.
- Shoulders stay over the wrists — don't let them drift forward.
Muscles
Primary: Abs
Secondary: Front deltoid, Hip flexors, Obliques, Serratus
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