Stand between lever handles with shoulder width or narrower stance. Squat down and grasp handles to each side. Stand upright with arms straight down to sides.
With back straight, bow forward by bending hips and bend knees slightly during descent. Raise torso by extending hips while gradually extending knees until standing upright. Pull shoulders back slightly if rounded. Repeat.
Do not stand behind handles. Throughout lift, keep arms and back straight. Do not lower weight beyond mild stretch throughout hamstrings. When finished with set, dismount by lowering weight with knees bent and low back straight. Full range of motion will vary from person to person. Those with less flexibility may have to bend knees more. Knees can be kept bent throughout movement.