Hamstring stretches are exercises designed to improve 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. Stretching them can help prevent injuries and alleviate tightness. To perform a basic hamstring stretch, sit on the floor with one leg extended and the other bent. Reach toward the toes of the extended leg while keeping your back straight. Hold the stretch for 15-30 seconds, then switch legs. Regular stretching can enhance overall mobility and support athletic performance.