The Science of Sweat

The Science of Sweat

Aug 20, 2025

Like Elvis in his Vegas-era jumpsuit, sweat season is in full swing. But what is sweat, really? Why do we do it? And why does doing it in a sauna supercharge the benefits? Let’s turn up the heat.

Why We Sweat
At its core, sweat cools your core. Exercise, summer in South Carolina, or a steamy sauna session all raise your body temp until the hypothalamus says “open the sweat gates!” Liquid pours out, evaporates, and carries heat away. Without it, even a few minutes in a sauna could be more dangerous than healing.

But, Like… What Is Sweat?


Depends which glands you ask. Eccrine, which account for 90%, cover the body and pour out a watery sweat with a salty mix your dog loves—minerals, vitamins, proteins, and even trace toxins. Whereas apocrine glands, found in areas like the armpits and groin, release a thicker, pungent sweat loved only by deodorant companies.

Why Sweating Is a Power Move
The benefits of intentional sweating go way beyond looking like you just worked out:


  • Cardiovascular Health: Raises heart rate, widens vessels, boosts blood flow, lowers long-term risks.
  • Cellular Resilience: Heat activates heat shock proteins, which help repair damaged proteins and reduce inflammation.
  • Stress Reduction: Endorphins go up, cortisol goes down. Frequent sauna-goers have shown lower incidence of dementia and depression.
  • Detoxification: Sweating in a sauna helps flush out toxins and heavy metals, supporting overall health through thermal detoxification.

Sauna as Sweat Tech

Not all sweat sessions are created equal. At Plunge, we’re big believers in making sweat work for you, and that’s where our saunas come in. Unlike a random jog on a hot day, sauna use gives you a controlled, intentional environment to harness the science of sweat.

  • Consistency, Not Chance: Step into a Plunge Sauna and you know you’re hitting the same temp every time. No guessing, no weather apps.

  • Your Reset Ritual: Whether you’re chasing recovery from a long run or looking for a mental reset, the sauna gives you a repeatable way to get there.

  • Built for Recovery: Pairing sauna with cold plunging creates a contrast therapy cycle that trains your cardiovascular system, boosts circulation, and leaves you with an unmatched natural high.


How to Sauna Smarter
Saunas are safe and powerful, but only if you play it right:


  • Find the Sweat Spot: 150-195°F is the ideal sauna range for most.
  • Ease Into It: Beginners start with 10-15 minutes, gradually building up their tolerance.
  • Hydrate! Replace water and electrolytes. You’ll lose sodium and potassium faster than you can say “dude, where’s my water bottle?”


Bottom line, the science of sweat is clear. From survival tool to health hack, sweating is our built-in superpower. With a Plunge sauna, you can take that power and make it intentional – using heat as a ritual, not just a reaction. Pair it with a cold plunge, and you’ve got one of the most effective recovery tools on the planet.