Stephen Cheung

We bust myths about exercising in the heat and in cold weather. We are joined by Dr. Stephen Cheung, one of the world's preeminent environmental physiologists.

Today Stephen Cheung differentiates some physiological causes of fatigue, including muscle damage, glycogen depletion, body temperature, and why no one of these reasons fully explains fatigue, despite what some researchers might tell you.

We explore the physiological effects of training in the cold, from muscle damage to the increased caloric demands and how to stay warm.