I was gifted this mat when my knee was in a lot of pain about a year ago. In a few days the pain was gone. I sleep on it all the time and put it under the part of the body that may hurt or just enjoy the benefits of the PEMF Amethyst Far Infrared 32"x20" Mat since there's very seldom pain anywhere any more. Because it has done so much for me I ordered the 24"X72" full body mat and the extra thick padded cover to fit since is is quite firm. I have no doubts the new body size mat will not disappoint after sleeping on it just two nights. I have a most of the time pain free 73 year old body thanks to my Healthy Wave Mats.