Finnish bath or sauna (Sauna) is a health bathing method with a history of more than 2,000 years. It relaxes the body and mind through the circulation of cold and heat. It is a leisure activity that can eliminate fatigue and restore physical strength. Sauna is generally considered to be helpful for pain conditions such as muscle aches, rheumatism and airway problems, and it is now scientifically proven that it can also reduce the risk of cardiovascular disease. A sauna study from Finland included more than 2,300 middle-aged men aged 42-60 with an average follow-up period of 20.7 years. Results showed that the number and duration of baths were inversely related to cardiovascular morbidity and mortality (see graph below):
Whether in a dry or wet bath, the heat of the sauna increases the body's surface temperature, which stimulates the Autonomic nervous system to increase Cardiac output, and the heart rate rises to 100-150 per minute Under, this is about equal to the power of low-to-moderate exercise. On the other hand, heat can also accelerate blood circulation and dilate blood vessels. Hot and cold circulation is equivalent to doing dilation and contraction exercises for blood vessels, which can enhance the elasticity of blood vessels and improve the endothelial cell (Endothelium) function of blood vessels. The most important thing is that taking a sauna has the same benefits and is quite safe for patients with high risk of heart disease, stable angina pectoris (Stable angina pectoris) or heart failure.