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Stability Ball Pike-UpMain Muscle: Abdominals Mechanics Type: Compound Place your hands on the floor with your hands directly under your shoulders. Place your shoes on a stability ball, with your shoelace area on the top of the ball. You should look like you are doing a push-up on the floor. While keeping your core tight and back flat, pull the stability ball towards your chest while keeping the legs straight. Raise your bottom and hips as high as possible, while keeping the core contracted. The stability ball will roll from the shoelaces to the tip of your shoes. Hold for a second, lower the hips and return the ball to starting position. Focus on proper breathing and do not hold your breath.