Step onto a band on the floor with both feet, your feet around shoulder-width apart and out near the handles of the band. Bend at the waist and grab the middle of the band with your hands six inches or so apart. In the down position, there should be tension on the band. Start in a standing position, then push your hips back to lower your torso downward, keeping your legs extended with only a slight bend in the knees. When you feel a good stretch in the hamstrings, contract your glutes and hamstrings to reverse the motion and return to the standing position. Repeat for reps.