On this episode, Dr Hazel sits down with Dr Stacy Sims - an Environmental Exercise Physiologist and Nutrition Scientist specializing in sex differences. She is also author of the book ROAR: a comprehensive, physiology-based nutrition and training guide specifically designed for active women. In this episode they cover: *Training around your period *How women compare to men in exercise performance - and in recovery *Fuelling training throughout the lifespan *Supplements *Gut health