Lie on your back with one leg bent, one-foot flat on the floor, and your other leg extended straight out. Lift your straight leg upward until you feel a slight stretch along the back of your leg. Use your hands to grasp behind your knee and help raise and hold your leg. If you have difficulty reaching your knee with your hands, place a towel under your knee or thigh and pull up on that. Hold that position for 5 seconds. Slowly lower your leg and let it relax on the floor. Do 5 repetitions. Switch legs and repeat.