In this episode, Cher and Carina discuss the benefits of training in the heat, emphasizing physiological adaptations such as increased plasma volume and improved thermoregulation. They explore the mental toughness developed through running in uncomfortable conditions and the effects of humidity on performance. The conversation also touches on the synergy between altitude and heat training, the long-term nature of running progress, and the importance of safety and hydration during heat training. Finally, they prepare listeners for race day conditions, highlighting the necessity of heat acclimation.