Facing bench, stand between bench and lever pads. Lie prone on bench with knees just beyond edge of bench and lower legs under lever pads. Grasp handles.
Raise one lever pad to back of thigh by flexing knee. Lower lever pad until knee is straight. Raise and lower other leg pad. Continue by alternating legs.
Keep torso on bench to reduce hyperextension of lower back. Most machines are angled at user's hip to position hamstring in more favorable mechanical position. If angle at hip is significantly bent, Rectus Femoris will less likely be involved as Antagonist Stabilizer. Dorsal flexion of ankle reduces active insufficiency of Gastrocnemius allowing it to assist in knee flexion. See Knee flexion abduction force vector diagram.