Flexibility is an integral part of optimal musculoskeletal characteristics. The tightness of hamstring muscles is one of the main factors hindering performance in daily activities. Reduction in the flexibility of the hamstrings has been reported to increase the risk of damage to the musculoskeletal system. The flexibility of the hamstring is important for general health and physical fitness. The hamstring muscle is found to be the most prevalent for the tightness in the body. The tightness of these muscles produces decrease range of motion and reduced flexibility of the pelvis, hip, and knee joints. Reduced hamstring muscle flexibility has been implicated in lumbar spine dysfunction and showing a strong positive correlation between decreased hamstring flexibility and low back pain. Hamstring flexibility plays an important role in lower extremity injury. A hamstring is a group of muscles including semitendinosus, semimembranosus, biceps femoris, and its functions as a flexor of knee and joint extensor of the hip joint.