Sauna is a kind of heat bath. The use of dry heat causes high temperatures that induce a person to sweat heavily. There are various types of saunas, but most of them have wood-lined interiors that often use cedar, hemlock, or redwood. Electric stoves or wood-burning stoves are used to heat the stones inside the sauna.
Water is poured or splashed on these stones or the walls to increase the sauna’s humidity and make it more comfortable. Many saunas can have temperatures that go over the 180-degrees Fahrenheit, so it’s not a good idea to stay here for more than 20 minutes. It may seem dangerous, but it’s generally safe and good for health.