In this episode of fast Physiology on the Critical Oxygen Podcast, Dave Schell and I discuss the benefits of heat training for overall endurance performance in hot, humid environments. We explain how heat training affects the body's physiology and the cardiovascular system. We also provide a heat training protocol and strategies for implementing heat training. We discuss the adaptations that occur from heat training, such as increased plasma volume and improved sweating. The limitations of heat training and the importance of proper hydration and iron levels are also addressed. We explore the potential benefits of extended heat training protocols and its impact on altitude performance. We conclude by emphasizing the importance of individualization and monitoring blood chemistry when engaging in heat training.