Sauna benefits: Are saunas good for you? Can sitting in a sweaty box really improve your health? And how hygienic are they?

Throw a stone, and you’re bound to cross paths with someone who has jumped on the recent sauna bandwagon. But can sitting in a sweaty wooden box really improve your health? We asked the experts the burning (sauna pun intended) questions to find out if the trend is actually worth the hype.