MUSCLES ENGAGED Quadriceps The quadriceps (quads) are a group of four muscles on the front of the thigh. They allow your knee to straighten and provide stability when standing. Your quads are the most important muscle group for maintaining the ability to stand and to walk independently. Calves Calves (calf muscles) influence the ankles and contribute to overall ankle strength. Strengthening your calf muscles will help your balance and performing movements such as running, walking and jumping. Equipment Used Aerobic Steps The aerobic step is an elevated platform used during exercise. The height of the step can be tailored to individual needs by inserting risers under the step. The aerobic step is most commonly used for various bodyweight, plyometric and dumbbell exercises. Exercise Instructions Step 1 Start on top of the aerobic steps. Step 2 Step down straddling both sides of the step. Step 3 Stand back up on top one leg at a time.