Push Up with the Bosu is a variation of the original Pilates exercise "Push Up." Because the BoSU (which stands for "Both Sides Up") adds instablility, the shoulder girdle, the core and the abdominal muscles are greatly challenged! As always, if you feel your back arching, perform this exercise on your knees! Your abs, arms, back and core will be stronger in no time! Please visit http://www.PilatesOnFifth.com (for more info), http://www.UltimatePilatesWorkouts.com (for more videos), ...