Fitness Hero Aerobic StepFitness Hero Aerobic Step The Fitness Hero Aerobic Step will not only give you and ideal cardiovascular workout, strengthening legs and working the heart and lungs, it will also allow you to work the upper body independently, or at the same time, as you performing stepping exercises. The blocks to change height store securely under the unit when not in use. With the ability to work the upper body independently while strengthening your legs and