Position sled away from platform. Lie supine on sled with shoulders against pad and place feet on platform. Grasp handles to sides and straighten knees. Place toes and balls of feet on lower portion of platform with heels and arches extending off.
Push sled away from platform by extending ankles as far as possible. Return by bending ankles until calves are stretched. Repeat.
Position sled back yet not so far that weight bottoms out during stretch. Keep knees straight throughout exercise or bend knees slightly only during stretch. Quadriceps serve as synergist muscle if knees are bent slightly during stretch. See Calf Exercise Analyses.