Saunas are showing up everywhere lately, from gym recovery suites to infrared blankets marketed as longevity tools. The science behind them is more substantial than most wellness trends, but also more specific about what actually works. Here’s what researchers have found.
Can Sauna Use Actually Help You Live Longer?
The evidence is genuinely strong, though it comes with important caveats. The most cited research is a long-running Finnish cohort study, published in JAMA Internal Medicine in 2015, that tracked 2,315 men for over 20 years.
Men who used a sauna four to seven ti...
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