What’s Going On in Your Body When You Watch a Horror Movie

It's triggering a genetic reaction
Here's a nice bit of research you can cite the next time someone says there's something wrong with how much you like horror movies. According to a study from the University of Bonn (via The Telegraph), horror movies are actually acting on you and your body at a genetic level. The gene in play here is the COMT gene, which the U.S. National Library of Medicine says is responsible for helping dictate levels of certain transmitters in the brain and for directing how signals are transferred from one nerve to the next.