I’m an over sixty social tennis player and when I get a muscle injury it usually takes a long time to heal. I also can’t take anti inflammatory drugs as I have had a bad reaction to them in the past. Mini-Magic PEMF has given me pain relief but never completely healed my lower back muscle issue. After using Magic PEMF mat for three treatment sessions spread over three days, I got the best pain relief result. A few days later I reinjured the same muscle playing tennis and after three more daily sessions with Magic PEMF mat I had reduced the pain significantly again. The product is well made and easy to use.