What is cold-induced vasodilation?
Vasodilation is when your blood vessels widen (dilate) after they’ve been narrowed (vasoconstriction) in response to the cold. This physiological process is also known as cold-induced vasodilation (CIVD) and it’s there to help you keep a steady temperature. CIVD also protects your extremities, such as fingers, toes, nose, and ears, from frostbite and other cold-related…