How To: Assume a push up position with both hands on the narrow end of a step. Your body should be in a straight line from feet to head. While shifting your weight onto your left arm, move your right hand to the floor. Shift your weight to your right arm as you place your left hand down on the floor. Step back with your left hand than your right. Repeat.
Muscles Used: Core, Triceps, Pectoralis & Back Muscles