Why do we get 'brain freeze' when eating cold food too quickly?

We get brain freeze when we eat cold food too fast because our head gets a quick shock from the cold.

When you scarf down an ice cream cone really quickly, your mouth and throat get super cold. This coldness travels up to the roof of your mouth, which is right under your brain. It’s like putting a cold, wet towel on your forehead, suddenly, your brain feels the chill.

Your body doesn’t like surprises. When it feels something very cold touching the roof of your mouth, it sends a message to your brain: “Hey, there’s a big change here!” Your brain then responds by making you feel like it's freezing, that’s the brain freeze!

It’s like when you jump into a pool on a hot day. The water is cold, and your body says, “Whoa, this is different!” So your whole body shivers or gets really chilly. That’s kind of what happens with brain freeze, but just in your head!