HOW: Have your feet slightly less than shoulder width apart. Push into the ground with your toes lifting your heels slightly off of the ground in a small hopping motion. Continue this motion quickly as you hop up and down staying on the balls of your feet. FEEL: You will feel your calf muscles and muscles in your feet working the most. COMPENSATION: Stay upright and only allow your feet/ankles to do the work hopping up and down. Exercise Library
