100NO 699: The Truth About Infrared Saunas: Benefits & Myths with Sebastian Mierau

Today we tackle one of the hottest trends in health and longevity: infrared saunas. With social media awash in commentary — from skeptics to evangelists - and high-profile figures like Bryan Johnson dismissing their benefits, it can be difficult to separate fact from fiction.   To unravel the science, history, and practicalities behind saunas, we welcome Sebastian Mierau, founder of Clearlight Saunas International and a longtime expert in sauna technology and wellness.  Whilst Sebastian is a friend of Marcus, we don’t shy away from asking the hard questions that listeners want the answers to.    We explore the origins of both traditional and infrared saunas, discuss the potential health benefits and risks (including electromagnetic fields), and answer whether infrared saunas really stack up when it comes to improving longevity, recovery, and relaxation.  Whether you’re a sauna skeptic or superfan, this episode is packed with accessible science, practical advice, and some surprising perspectives on what it really takes to live a long, healthy, and enjoyable life.   05:21 Cultural history of saunas 08:28 Traditional sauna practices 10:27 How infrared saunas work 13:12 Explaining infrared heat sources 17:32 Innovative EMF shielding techniques 20:24 Understanding Infrared Types in Saunas 24:34 Sauna's calming infrared effects 28:31 Infrared vs. Hot Rock Saunas 32:36 Infrared therapy in Germany 33:31 Infrared saunas and body temperature 42:38 Future of biohacking and vegan longevity