Position barbell on back of shoulders and grasp bar to sides.
Keeping back straight, bend hips to lower torso forward until parallel to floor. Bend knees slightly during descent. Raise torso until hips are extended. Repeat.
Best Uses: This is a great supplementary exercise for deadlifts as the focus is more targettting the hamstrings rather than lower back, to help the initial pull off the floor. An excellent exercise for sprinting sports because it strengthens the hamstring through it's entire range, and the controlled change of direction between the eccentric to concentric (stretch to shortening) is when most hamstring injuries occur ie when you leg is accelerating.