A brain freeze is a short, intense sensation behind the forehead and temples of your head that hits after eating or drinking something cold too fast. It usually only lasts 20 seconds. If you get one, don’t worry – your brain isn’t actually freezing!
You see, when something cold hits the blood vessels and nerves in the roof of your mouth too quickly, the rapid lowering of the temperature in your mouth causes your body to react by sending a rush of blood to the area. That’s the cause of the sensation.
Giving yourself a brain freeze is safe and harmless. So, what’s the antidote? Just drink warm water!