I got IMMEDIATE relief!! I actually couldn't believe it! You can control the pressure easily, the balls are firm enough to give you "relief and release" yet not so hard that they hurt, and with a little practice-I was able to actually use it to release tension in the back of my skull, muscles along base of my skull, all down sides and back of my neck and across tops of my shoulder blades. Within a matter of a few minutes, and a few deep breaths, I felt completely different. Only someone with ongoing fibromyalgia pain might understand what I am saying, but you just can't get 18-20 trigger point injections on a regular basis!! THIS I can rely on regularly!