http://www.telegraph.co.uk/science/2017/10/09/saunas-cut-pneumonia-risk/
Going to a sauna twice a week cuts pneumonia risk, study finds
Henry Bodkin 9 OCTOBER 2017 Sweating in a sauna at least twice a week could slash the risk of potentially deadly infections like pneumonia, research shows. Men who enjoyed sauna sessions on a regular basis were almost 30 per cent less likely to develop the life-threatening illness.