I have been experimenting with the mat nightly to see if I can reduce ankle swelling as a result of circulation issues, although my doctor prescribed a compression boot. It made sense to me to address the issue rather than treat the symptoms. It's been 5 weeks, and I intend to continue for at least 3 mos. I also wear ankle compression socks. I do think I am seeing a definite improvement. 1/2 hour on 15 PEMF and Proton, and 1/2 hour on the front of my legs from my feet up with the same setting. So far, so good. Well made product. Very pleased and the company itself is proactive and helpful.