I read that article and also found some other articles on the cryosauna. It sounds like it's ridiculously cold yet the endorphines released give you a 'great' feeling for six hours after that. I'm curious to know when athletes like runners do the cryosauna session? Do they do it right before a race to give them more energy and 'revved up' blood? If there was one near me, I'd be tempted to try it out. I do however prefer the hot tub after a good workout. It seems to help my muscles recover faster and not be as sore the next day.