HomeTek USA Multi-Level Back Stretcher with DVD Instruction, Black/White Pain Reliever supports and helps proper alignment from back muscle pain, vertebrae, knots and more It helps releases the buildup pressure and tension that's built from hard labor at work and working out in the gym Prevent or reduce tightness and stiffness in the muscles of the lower back, hamstrings, buttocks or hips is by stretching them on a consistent basis in order to increase their flexibility Stretching reduces the risk of low back pain by promoting muscular relaxation Stretching is the most effective way to increase the flexibility of a muscle