Dr. Craig Heller explains how the body regulates temperature, emphasizing that conventional cooling methods like ice packs on the neck are ineffective for lowering core temperature. He highlights the importance of glabrous skin areas—palms, soles, and upper face—in heat dissipation due to their specialized blood vessels. Cooling these areas enhances both aerobic and anaerobic performance by preventing overheating and delaying muscle fatigue. Heller shares research showing that palm cooling between sets significantly boosts performance and endurance. He also discusses brain cooling mechanisms, the potential benefits of facial cooling during heat stress, and the controversial use of cold therapy in concussion recovery. Practical tools, such as using cold objects to cool the palms or water on the face, are explored as effective strategies to improve physical output and possibly support long-term training adaptations.