When your body gets cold, the vessels in your toes constrict so that blood flows to more important body parts like your brain and heart. That’s great for keeping you alive, but your extremities suffer.
Protect Your Feet from Frostbite

When your body gets cold, the vessels in your toes constrict so that blood flows to more important body parts like your brain and heart. That’s great for keeping you alive, but your extremities suffer.