Heat · 03
79°C
average temperature in the Finnish saunas behind the long-term studies
The long-term health data come from hot, traditional saunas.
The Finnish men bathed at about 79°C for 14 minutes a session.Source 1 · Cohort studyAssociation Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality EventsLaukkanen T, Khan H, Zaccardi F, et al.. JAMA Internal Medicine, 2015.Read the paper ↗PubMed ↗ In a head-to-head study, a traditional sauna raised core temperature by 0.4°C and a typical infrared session didn't move it.Source 2 · Crossover trialComparison of thermoregulatory, cardiovascular, and immune responses to different passive heat therapy modalitiesAtencio JK, Reed EL, Wiedenfeld Needham K, et al.. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2025.Read the paper ↗PubMed ↗
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If you're buying for health, choose a sauna that reaches about 80°C. An infrared cabin has to run hotter than its usual 45–60°C to heat your body as much.Source 3 · Clinical trialFar‐infrared sauna exposure at 65°C elevates core temperatureJenkins EJ, Killick JA, Grimm SR, et al.. Experimental Physiology, 2026.Read the paper ↗PubMed ↗