Why do we get 'brain freeze' when eating cold things?

We get brain freeze when eating cold things because our head reacts to the sudden chill, like a surprise snowstorm on a warm day.

Imagine your mouth is a cozy room with a heater on, that’s what it feels like when you’re enjoying a hot chocolate or a warm soup. But then you take a big bite of something really cold, like ice cream or a popsicle. It's like someone suddenly turned off the heater and opened all the windows!

Your mouth sends a message to your brain, saying, “Hey, it’s super cold in here!” The blood vessels near your nose and forehead, which are like little highways for blood, get confused and shrink quickly, almost like they’re taking a shortcut. This sudden change makes your head feel like it's freezing over!

Your brain gets the message from your mouth, and brain freeze happens, it feels like your head is full of ice cubes! But don’t worry, it doesn’t last long, just like how a snowstorm eventually stops, your brain warms up again, and you’re back to enjoying your treat.