What Sauna Does to Your Body — and Why Longevity Experts Swear by It

After testing cold plunges, I turned to sauna. Here's what sauna really does to your body, what the science says, and how it fits into the longevity lifestyle.

Hi, I'm Shantanu — I run a longevity-focused health brand based in Singapore. Most of my time is split between building digital-first platform, experimenting with performance tools, and writing weekl…