Area Targeted: Abs, Shoulders
Set up: Get in plank position with your shins on the ball and your palms on the floor under your shoulders.
Movement: Lift your hips up in the air while you roll the ball down to the tops of your feet, until your body is in and inverted "V" shape. Then lower your hips and roll the ball up back to starting position. Repeat.
Points To Remember:
1. Be sure to pull your abs in and keep your head even with your spine as you move your body in and out of the "V".