Stability ball knee rocks in crook lying

Stability ball knee rocks in crook lying

Lie on your back with your legs on a stability ball.
Tighten your abdominal muscles.
Slowly roll the ball to one side, controlling the movement with your stomach muscles.
Roll the ball back to the middle and then to the other side.
The closer the ball is to your feet, the harder the exercise.

Required equipment: Ball - large, Mat, Stability Ball
View all exercise videos on Physitrack