Sit on the machine and place your toes on the lower portion of the platform. Place your lower thighs under the lever pad. Lift the lever slightly by pushing your heels up and release the safety bar. This will be your starting position. Inhale, slowly lower your heels by bending at the ankles until the calves are fully stretched. Raise the heels by extending the ankles as high as possible as you contract the calves and exhale. Pause. Repeat.