Why do some people experience déjà vu regularly?

Some people feel like they've been somewhere before, even when they haven't, that’s déjà vu.

Imagine you're playing with your favorite toy, and all of a sudden it feels exactly like the time you played with it yesterday. That's kind of what happens during déjà vu. It’s like your brain gets confused for a moment, it thinks something is familiar when it's actually new.

Your brain has two parts that work together to help you remember things: one that takes in information and another that checks if it feels familiar. Sometimes, these two parts get out of sync, like when you're eating a sandwich, and your brain says, “I’ve had this sandwich before!” even though it’s the first time.

Some people have brains that are really good at being confused, maybe they have a lot of memories to juggle or their brain parts work a little slower. That means they get déjà vu more often, like how you might feel extra sleepy after eating too many cookies. Some people feel like they've been somewhere before, even when they haven't, that’s déjà vu.

Imagine you're playing with your favorite toy, and all of a sudden it feels exactly like the time you played with it yesterday. That's kind of what happens during déjà vu. It’s like your brain gets confused for a moment, it thinks something is familiar when it's actually new.