Sauna (Sauna), also known as sauna, is in a closed room with a steam process of physical therapy on the human body. Usually sauna room temperature can reach above 90 ℃. Saunas originated in Finland, more than 2,000 years of history. Repeated use of dry steam cleaning of the whole body hot and cold stimulation, so that repeated expansion and contraction of blood vessels, can enhance the elasticity of blood vessels, preventing vascular sclerosis results. On arthritis, back muscle pain, bronchitis, neurasthenia have some health benefits.

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