Take this for what it is worth. A number of years ago I could not move my right arm at all without major pain. I told my BIL and he said that I should try the Q-Ray bracelet, not the knock offs, so my DW went out and bought me one. I had suffered with this for months. I put the Q-Ray on my right wrist with the magnets on the top of my arm in the afternoon, when I woke up the next morning I had full mobility and no pain. Is this a miracle, I don't know. Is it in my head, I don't know. But I never take it off and I have never had any pain since. My BIL is the same. Just my 2 cents worth. Macktee