Finnish university with campuses in Joensuu and Kuopio, formed in 2010 by merger
A wave of studies suggests heat exposure from saunas and infrared therapies may help the body acclimate to heat and support cardiovascular health. Experts warn that benefits are long-term, not acute, and safety depends on individual health and monitoring. Readers should consider long-term heat-adaptation strategies rather than using saunas as an immediate heatwave fix.