What does sauna mean?

Sauna, also known as Finnish bath, refers to the process of physical therapy with steam in a closed room.

Usually, the indoor temperature of sauna can reach above 60℃. Sauna originated in Finland and has a history of more than 2000 years. By using the cold and hot stimulation of repeated dry steaming and water washing, blood vessels can be repeatedly expanded and contracted, which can enhance the elasticity of blood vessels and prevent arteriosclerosis.

"Sauna" is Finnish, which means "a cabin without windows". I'm afraid this name has something to do with the origin of sauna. At first, there were no windows or even chimneys in the hut, and the smoke blackened the room. Therefore, the sauna at that time was called "smoke sauna".

Later, some innovative people installed chimneys, and the sauna took on a new look. However, there are still "smoke saunas" in some places in Finland, but it takes a lot of money and time to enjoy them once, because it takes seven or eight hours to achieve real results.