Yep, a good old sauna is very, very good for your health. By increasing your internal body temperature up to 102.5 you give the same effects as moderate exercise. Actually 174 degrees Fahrenheit for 20 mins at 10-20% humidity in a regular sauna 4-7 times per week reduces cardiovascular disease, stroke, Alzheimer’s, and increases your life span. There is benefit if you do it 2-3 times per week, but 4-7 times is the magic number for the most benefit. One example is stroke is reduced by 14% when used 2-3x per week but there is a 61% reduction in risk if used 4-7 times per week. The reduction is similar with 4-7x in all cause death, hypertension, and other diseases.
Sauna also has an additive effect when you exercise as part of your routine. Infrared sauna and hot baths benefit some, but the old fashioned sauna is where the research is for health.
This is making me consider adding this to my health regimen.