People react inside a car converted to sauna during the European Sauna Marathon in Otepaa, Estonia February 15, 2020. Contestants from around the world braved the cold and heat on Saturday (February 15) by taking part in a bizarre sauna competition in Estonia, which pits teams of four against each other in fancy dress along a route of over a dozen steaming hot sittings. REUTERS/Ints Kalnins

People react in a sauna during the European Sauna Marathon in Otepaa, Estonia February 15, 2020. The contestants are given an orienteering style route to follow with the aim to enter each sauna for at least three minutes. REUTERS/Ints Kalnins

Women pose during the European Sauna Marathon in Otepaa, Estonia February 15, 2020. The teams have to complete 19 sauna sittings, with additional points for diving head first into ice pools up for grabs. REUTERS/Ints Kalnins

Sauna owner Adam Rang heats the sauna in a converted military truck during the European Sauna Marathon in Otepaa, Estonia February 15, 2020. This year one of the sittings took place in a Soviet military truck manufactured in the sixties. REUTERS/Ints Kalnins

People sit in a hot tub during the European Sauna Marathon in Otepaa, Estonia February 15, 2020. REUTERS/Ints Kalnins