 After this, they usually warm up in the sauna again, often with the aid of alcoholic beverages.The first 300 Club outside of Antarctica was established on January 30, 2019 near Minneapolis, Minnesota during a polar vortex.With an outside temperature of −27 °F (−33 °C), three men heated their backyard sauna to 280 °F (138 °C) and sat inside for 10 minutes.