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Sauna: heat stress for heart and longevity

Sauna — heat stress for heart and longevity. Sauna bathing is a long-standing tradition in Finland and is now studied for cardiovascular benefits. Regular sauna use is associated with lower blood pressure, improved vascular function and reduced mortality risk. Studies often involve 20-minute sessions at 174–198°F, two to four times per week. Clinical reviews keep tying modest gains here to steadier metabolism and stronger immunity. Mechanistically it tightens control of blood sugar, cortisol and oxidative stress markers. Track one simple marker instead of chasing a flawless outcome. For most adults, if you have access, start with 10–15 minutes and hydrate well afterward. Lasting change is built out of boring, reliable repetition.