When it comes to the human brain, the truth is, we don’t really know much about it. We just know that it helps us think and successfully stores a vast amount of information. Outside of those everyday functions, our brains do things that you might not know about. Here are some of the many weird and amazing functions of the human brain.

And Over Again

Déjà vu has been an oft-discussed phenomenon for years. A 2016 study determined that it’s simply your brain working overtime to re-evaluate your memories. “It could be that déjà vu experiences make people cautious, because they might not trust their memory as much,” associate scientist Stefan Köhler said.

Going Through The Motions

Motion sickness can be a real pain if you’re on a plane or ship. Turns out, this is caused by your ears and eyes having conflicts with your brain at certain moments. Your ear might tell your brain there’s motion, but your eyes might decide that you’re not moving at all.

Control Your Dreams

“Lucid Dreams” isn’t just a popular Juice Wrld song or an influence on the film Inception. These sorts of dreams have been researched since the ’60s. In a lucid dream, you control everything that happens. Lucid dreams can become so intense that contests are even being held for the best one.

On The Tip Of My Tongue

You’re sure you know that great actor on TV, but you can’t quite get his name out. This common problem is called lethologica, and it becomes more common as we age. Since we store so many words in our brains, we unintentionally lose more words than we use.

A Broken Record

Have you ever wondered why songs get stuck in our heads on repeat? We don’t intentional do it to ourselves. Our brain delivers these repeating songs called earworms because of its sensitivity to music. One way to get rid of an earworm is to sing or listen to the song.