Why do people keep falling asleep on roller coasters?

May 17, 2017 3:20 pm Last Updated: May 17, 2017 3:20 pm

We’ve all seen those videos of roller coaster riders who seem to have developed spontaneous narcolepsy. Why do people keep passing out on roller coasters, and if they don’t seem to mind is it really dangerous?


Like this guy here.

Well, a lot of Quora users say it’s called “Vasovagal Syncope,” which is basically fainting (yes, like Victorian ladies in tight corsets) at the sight or occurrence of something distressing enough to cause a brief reduction of blood flow to your brain. It’s pretty harmless, and not something that requires treatment.

Basically, these people aren’t getting enough oxygen—and that causes them to pass out for a little bit.