Cold plunges promise resilience—but what does the science really say? In this episode, we dive into the icy world of cold shock, a fast-growing wellness trend fueled by Wim Hof and his bold claims about immunity, inflammation, and mental well-being. Early studies show intriguing hints—fewer symptoms of illness, activated brain regions tied to positive mood, and that unmistakable dopamine surge after stepping into freezing water. But the evidence is far from settled. Larger trials suggest the benefits may be modest or even placebo-driven, and some recent research finds no broad physiological improvements at all. So why does cold exposure feel so good? And are we chasing genuine health effects or just the thrill of discomfort? Join us as we sort the chill facts from the frosty hype—and explore why millions keep returning to the cold anyway.

https://www.economist.com/science-and-technology/2025/01/31/are-ice-baths-good-for-you