Hamstring stretching is a physical activity aimed at increasing flexibility in the muscles located at the back of the thigh. These muscles, known as the hamstrings, play a crucial role in activities like walking, running, and jumping. Regular stretching can help prevent injuries, improve posture, and enhance overall athletic performance. To perform a basic hamstring stretch, sit on the floor with one leg extended and the other bent. Reach towards the toes of the extended leg while keeping your back straight. Hold the stretch for 15-30 seconds, then switch legs. This simple exercise can be done daily for optimal results.