Grasp handles of a tube in each hand, then step on middle of tube with left foot. Take a large step sideways with right foot, bending right knee to form a 90-degree angle. With left leg straight, turn left foot inward slightly. Place right forearm on right thigh, rotating left hip and shoulder open. Bend left elbow close to left hip, palm facing down.

Using legs and abs to stabilize you, press left arm overhead. Keep tension on tube as you bend elbow to starting position and repeat. Use medium resistance. Do 1-3 sets of 8-12 reps on each side, alternating sides after each set. Primarily strengthens shoulder muscles; also legs, abs and back.