The next time someone refers to a horror movie as “bloodcurdling,” they might actually be kinda right. A new study shows that the fear experienced when watching scary movies is in fact associated with an increase in clotting agents in the blood.
The fear response includes a big squirt of epinephrine which increases your heart rate and constricts blood vessels so you can run from the bear faster and bleed less when it bites. That your body also dumps clotting factors dovetails with this system nicely. What’s really surprising is that this hadn’t been recognized previously.
But I’d like to see if the findings stand up in a larger sample size.