Many people do not realize that something as calming as stretching can cause injury. The still too common hurdler’s stretch is a prime example. The exerciser sits with one leg straight, and the other bent back with the foot by the buttock, and leans forward over the straight leg. This extreme bend strains the ligaments of the knee.
Above is a safer way to stretch the hamstrings: From a seated position bend the leg so the knee points outward, and the foot is near or at the thigh of the straight leg. From this position you can gently lean forward (making sure not to round your back) until you feel the stretch in the back of your leg.