One of the clinically proven fact is that hamstring tightness leads to back pain and disc herniation. It is important that we stretch the hamstring muscle for good flexibility in spine and prevent back injuries.
Tight hamstring affects the position of pelvis – when moving forward it can strain ligaments surrounding the vertebrae and disks in your back. This can lead to back pain.
When hamstring is flexible and relaxed – when moving forward the pelvic motion is dominant which offloads the pressure on back ligament making it safe. By reducing the tightness of hamstring on can improve the flexibility of spine, prevent back pain and disc hernia.