Sit on machine with lower back against padding and grasp handles to sides. Position toes and balls of feet on foot of platform with arches and heels extending off. Straighten knees.
Raise heels by extending ankles as high as possible. Lower heels by bending ankles until calves are stretched. Repeat.
Keep knees straight throughout exercise or bend knees slightly only during stretch. Quadriceps serve as synergists muscle if knees are bent slightly during stretch. Also known as Sled Donkey Calf Raise. See Calf Exercise Analyses.