Bent-Leg Hamstring Stretch

Step 1. Lie on your back with one leg straight on the floor. Hold the other leg behind the knee or the back of the thigh and pull it towards your chest, keeping the knee bent, until you feel a stretch in the hamstrings.

Step 2. Hold the position while breathing calmly, then switch sides.

Step 3. See this instructional video from Stretch Therapy: https://www.youtube.com/watch?v=CrF2iMnn09w