152. Sauna Science: How Heat Supercharges Recovery, Heart Health & Longevity (with Professor Julien Périard)

Heat therapy is having a moment — but what actually happens inside your body in a sauna, and how should you use it for real benefits? Professor Julien Périard (environmental and exercise physiology, University of Canberra) joins Leanne to break down the science in plain English — from cardiovascular gains and heat-shock proteins to hydration, safety and exactly “how hot, how long, how often”. In…