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. Biceps Biceps are the pair of muscles on the front of the upper arm connecting the shoulder to the elbow. Your biceps are used in everything from turning a doorknob to lifting heavy items. Strengthening your biceps can greatly reduce the "flabby arms" look. 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. Dumbbells The dumbbell, a type of free weight, is a piece of equipment used in weight training. It can be used individually or in pairs (one for each hand). Dumbbells vary in weight from 3lbs. up to 150lbs. Exercise Instructions Step 1 Stand in front of the aerobic steps while holding a pair of dumbbells in each hand. Step 2 Step up on to the aerobic steps and curl the dumbbells up to your shoulders at the same time. Step 3 Step down and lower the dumbbells back down to the starting position.