Stability Ball Roll-Up

Set Up: Get into a straight-leg push up postion with your hands under your shoulders on the floor and your feet on a stability ball, soles facing the ceiling. Contract your back to draw your shoulder blades toward each other.

Action: Tighten your abs as you bend your legs to roll the ball toward your body, pointing your tailbone to the ceiling at the top of the move. Slowly straighten your legs to roll the ball away from you, back to the starting position. Repeat.