Supine Bridge

Begin lying on your back with knees bent, heels on the floor, toes slightly lifted off the floor. Brace your abdominals (tighten them as if to guard against someone punching you in the gut); squeeze glutes; then lift hips from the floor to create a straight line from your shoulders to your knees; hold positions for 5-10 seconds and repeat. Many people get cramps in their hamstrings. If this happens to you, STOP. Return to the floor; relax; then focus even more on tightening your glutes BEFORE you lift your hips from the floor.