I used to use the infrared sauna, but it got sold because it wasn't kidding the use it needed. My roommate had bad fibromyalgia so she bought it years ago. When I use it did make me feel much better.

I have infrared socks, comforters, longjohns. At one time my legs and feet were 15° colder than the other parts of my body. It is much better now. I used the products daily.