Abdominal crunch with legs on a stability ball - v2

Abdominal crunch with legs on a stability ball - v2

Lie on your back with your knees bent and your lower legs resting on a stability ball.
Place your hands to the side of your head.
Push your lower back down into the floor.
Tighten your stomach muscles.
Gently lift your head and shoulders a little way off the floor.
Slowly lower back down.
Try to keep the ball still during the movement.

Required equipment: Stability Ball, Mat
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