An absolute must for runners and lovers of high-heels. Stand with feet at hip width. While the leg you want to stretch stays in place, take a large step forward with the opposite leg, bending the knee so that it is directly above the ankle. Lower the back leg so the knee comes toward the ground, increasing the stretch across the front of the hip and thigh. Keep your torso straight and your tailbone tucked, so that your hands or arms are resting on your forward leg.