Hamstring Stretch "It can be helpful for this stretch to use either a stretch strap or a belt to assist," Ribaudo noted. As its name suggests, this stretch focuses on stretching out the hamstrings. Place a strap around the ball of your foot, and slowly straighten your leg until you feel a stretch in the back of it. Hold the stretch for 30 seconds. Repeat twice on each side. Image Source: POPSUGAR Photography / Victoria Moorhouse