A study subjected college students to viewing the rejection and acceptance of their photos in real time. When hooked to electrocardiogram monitors, their hearts reliably skipped a beat when they believed their photos were rejected. The same thing happened when the students' ages were judged: hearts skipped a beat when they were perceived to be over 21 years old. Maybe they should test this theory on a line outside a bar before drawing any more conclusions?
Now if only heartbreak could be over as quickly as your missed heartbeat.
Source: Flickr User nebarnix