The SAUNA (or Finnish bath1, coming from the Finnish sauna and the Estonian saun) is a small wooden cabin or a room in which you take a dry heat bath, which can vary from 70°C to 100°C, for the well-being. Sauna practice is a social and family tradition that appears to have existed for over 2,000 years in Nordic countries. An emblematic symbol of countries of Fennic culture (Finland and Estonia), the sauna has also spread widely in Scandinavian countries such as Sweden, and the Baltic countries such as Latvia.