Last winter I had 2 accidents, rupturing both quadriceps tendons. I had been using my Mini Magic to help me sleep. After returning home 3 months later, while going through painful Physical Therapy, I decided to try it on my knees. That is the best decision I could have made. While still mainly in a wheelchair I started Pemf therapy after every PT session. It literally drove out the pain and reduced the swelling. Now, it is time for me to get a Big Magic. In less than a year I am walking almost normally. I do a few miles a day on the treadmill to maintain the functionality of my knees. Oh yes, I also sleep like a baby now, all night long. Waking up is easy, just turn the Mini Mate off, within a few minutes I am up and about.