Sit down on the machine with your butt, lower back, and upper back firmly placed against it while you position your legs in front of the pad.
Set up the machine's backrest, seat height, and pad position so that your legs are parallel to the ground, with the pad pressed against the space between your calves and ankles.
Exhale and curl your legs down while holding onto the handles tightly with your hands.
Continue curling your legs until your feet are pointed directly towards the floor.
Inhale and allow your legs to extend until they are parallel with the floor, returning to the starting position.