Longevity keeps getting more complicated and expensive. Another supplement. Another wearable. Another test. Another protocol. Meanwhile, Chiang Mai is filling with saunas—and one of the most provocative long-term signals in longevity research comes from a practice humans have used for generations: getting hot, recovering and doing it again.

In a long-running Finnish cohort, men who reported sauna 4–7 times per week had a 40% lower adjusted all-cause mortality hazard and a 50% lower fatal-cardiovascular-disease hazard than once-a-week users. Other Finnish studies have linked frequent sauna use with lower dementia risk and lower cardiovascular mortality. Newer randomized evidence is far less dramatic.

Then there is the frontier stuff. Biohacker Bryan Johnson has published an aggressive sauna self-experiment reporting changes in vascular markers, environmental toxicant measurements and microplastics. Fascinating? Yes. Proof that sauna “detoxes” your body or removes microplastics? Not exactly. It is an uncontrolled N-of-1 experiment, and the headline is as interesting as the evidence.

Jason has spent nearly 6 years leading breathwork and ice-bath experiences in Chiang Mai, with sauna increasingly incorporated in recent years. This session brings those worlds together: Finnish population data, modern heat-therapy trials, Bryan’s experiment, Jason’s firsthand experience and the practical questions people actually have.

We’ll cover what heat does to the cardiovascular system, how often research participants saunaed, traditional versus infrared versus steam, what “detox” really means, fertility and overheating, hydration, sauna-plus-cold timing and how to build a sane personal sauna experiment.

Come if you already sauna. Come if you are sauna-curious. Come if you want to know whether Chiang Mai’s hottest longevity trend deserves a place in your week.

Bring one question: what do you want sauna to do for you—support cardiovascular health, recovery, sleep, stress, performance or simply feeling better? If you already sauna, bring your current routine.