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Research-Backed Guides

The Thermal Wellness Blog

Science-driven content on sauna, cold plunge, and contrast therapy. Backed by peer-reviewed research, not wellness fads.

Water poured from a wooden ladle onto glowing sauna stones, sending up a burst of steam
sauna9 min read

Best Sauna Temperature: Ranges by Type, Bench and Humidity

The best sauna temperature for traditional, infrared and steam saunas in °C and °F, what studies used, why your bench changes the heat, and safe upper limits.

November 3, 2026
An empty traditional sauna with three tiers of wooden benches, a folded towel and a sand hourglass on the top bench, and a glowing stove in the corner
sauna11 min read

How Long Should You Stay in a Sauna? What the Research Says

How long should you stay in a sauna? Research-backed session times by experience level and sauna type, why sweating starts late, rounds, and when to get out.

October 28, 2026
A glass carafe of water and an empty glass on a wooden ledge outside an open sauna door, with warm light and steam behind and a snowy lake at dawn beyond
sauna8 min read

Sauna Hydration Guide: How Much Water Should You Drink?

How much water to drink before and after a sauna, based on sports medicine guidelines: how much you lose, the 150% rule, when electrolytes help, and what to avoid.

January 18, 2026
Water droplets beaded on the dark wooden upper bench of a steamy sauna, lit amber by the stove below
sauna9 min read

How Much Do You Sweat in a Sauna? A Science-Backed Guide

How much sweat you lose in a sauna, based on peer-reviewed research: typical amounts, what changes them, and how to estimate your own loss and water needs.

January 12, 2026
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