All About Brain Freeze: Here’s Why We Get The Ice Cream Headache

There’s a lot we know about how a brain freeze works. There’s also a lot we don’t know. Just beneath the skin on your face is a network of blood vessels that supply the face and brain with blood. Blood contains many nutrients like oxygen, which is essential for your brain to function. Tangled up in this network of vessels are tiny nerve endings connected to one another and the brain through the trigeminal nerve.