Husband and I just purchased an infrared sauna and have been using it for 2 weeks and can honestly say I feel much better after using it. We got it for the detoxing of mercury. Just got my last filling out in Jan. and hoping to get the mercury out of the fat. I've gradually gotten the temp up to 130 and staying in for 30 minutes so I'm really sweating something out. But I do feel better after.