The Magic Back Support is a small lightweight multi-level back stretching devise that helps you relax and immediately relieves back pain due to tight muscles, excessive flexion, and poor spinal alignment. Just lie down and relax for five minutes twice a day. The Magic Back Support is recommended and used by Physicians, Chiropractors, and Professional Athletes，Acupuncture,stretcher spinal,and muscle pain relief.</br>* Word of warning - You may be sore and have muscle spasms in your back after the 1st couple uses, especially if your muscles aren't used to stretching. That's normal, and the mild discomfort from that goes away quickly and is worth it. You'll feel better in the long run. A hot shower or heating pad after you stretch helps. I prefer using heat instead of ice because the goal is to relax the muscles. Also just doing gentle stretching afterwards calms down any spasms.