 There's not too much difference to it, Marty, but I personally like dry. People call it wet saunas. I think dry saunas are a lot better. There's not really a whole lot of difference, though. Definitely wet saunas are going to be more beneficial if you're trying to clear your air ducts. No question. All right. Cold therapy. We just talked about heat therapy. We're going diametrically the other way. Cold therapy.