I suffered a low back pain for years, and tried various treatment: acupuncture, massage, chiropractor, etc.. they majorly provides temporary relief of pain but I believe the ultimate way to improve the issue is to maintain the spine and strength the muscle by myself.. I bought this stretcher and kept using it several days already. It is easy assembled, and very handy to use anywhere. I use it to exercise my spine before go to bed every night. It helps stretch my low back pretty well. At first it...