Have you ever been just on the verge of falling asleep and a massive twitch or a “hypnic jerk” as they’re called, almost made you fall out of your seat and you had to look around to make sure nobody saw? I distinctly remember waking myself up with one that practically felt like a seizure while taking a nap in my car at work on a hot summer day during a lunch break. When I woke up I looked two cars over and there was a coworker trying to stifle a laugh but not doing a very good job. This isn’t exactly travel related except that it always seems to happen to me in public like on an airplane or in an airport… no bueno! Anyway’s I just read this article on the science behind it and thought I’d share it.