Ice baths, freezing plunges, wild swimming and cryotherapy might be filling social media feeds, but let’s not forget about all the glorious ways cultures around the world "get their sweat on" in preparation for those chilling temperatures. A custom-designed Finnish sauna at Faena Hotel & Spa, Miami, FL. (Photo: Nik Koenig) Hydrothermal bathing practices are having a real renaissance. There's a convergence of trends contributing to this phenomenon - from the craving of social
