I have tried countless gadgets for my tight neck, upper back, and lower back muscles. Needless, to say, THIS works the best kneading my knots and decreasing my pain. Although this works for me, this may not be for you if you don't like, or physically cannot take deep tissue massages - it is very strong. Keep reading if that isn't an issue. Place this massager behind your neck, upper back, mid-back, or lower back. I start from my neck and work my way down moving it wherever I have pain. After using this heated massager, I'm in MUCH LESS pain. Acupuncture and deep tissue massage definitely help my pain, but that gets costly. The reason I'm writing this review is because I hope to help others who suffer from chronic muscular back pain, like I do. It certainly is a game changer for me (with daily use) ...hope it works for you as well!