Peripheral Vasoconstriction in fingers demonstrated using Infrared

What Is Peripheral Vasoconstriction?

This physiological response has been mentioned so many times that I decided it needed its own specific post to plug into the Cold Water Swimming articles section. What is peripheral vasoconstriction? Following immersion in cold water, blood flow is reduced in human limbs and skin. Why does peripheral vasoconstriction happen? Peripheral vasoconstriction occurs to allow the…