I am a retired tennis pro and have suffered left shoulder and lower back issues for the last ten years. There has been very little medication/treatment that has helped to alleviate the pain, but recently, I bought a new product like an acupuncture pillow...my best attempt at describing. Anyway, its called a Prickly Pad and its basically just a pillow with acupuncture like needles. I have laid on it the past month for 20-30 minutes a day. I cant even begin to say how well it has worked. I am even back hitting the ball around. I would advise all who experience this type of pain and intensity to look into this type of product.