Simply the best way to achieve athletic legs and buns of steel!
Start position: Place the CoolBoard on the floor with the ball underneath. Place your feet on the grips with your buttocks on the floor, approximately six inches away from the board. Push with your feet so that the board balances on the ball.
Exercise: Raise your buttocks from the floor as high as possible, hold and then slowly lower. Aim for three sets of twenty-five. To intensify the exercise, cross your arms over your chest.
Progression: Cross arms over chest. Gradually move feet together, and then raise one foot.