From Ted Education:
At this very moment, people are lining up somewhere to scare themselves, be it with a thrill-ride or a horror movie. In fact, in October of 2015 alone, about 28 million people visited a haunted house in the US. But you might wonder: What could possibly be fun about being scared? Margee Kerr examines the biology and psychology behind what makes fear so fun.
[TED Ed]