Dr. Craig Heller was interviewed on Episode #40 of the Huberman Podcast. He talked about how to increase endurance and strength by regulating your body temperature during exercise. The key is a part of the circulatory system in the palm of the hands, the soles of the feet, and non-hairy part of the face. This unique structure is called arteriovenous anastomosis where the arteries are directly connected to veins. Normally, arteries are connected to veins by capillaries. Heat o