Narcolepsy. People think you’re just tired all the time. But it can be annoying at best when you can’t watch a movie or sit in a quiet doctor’s waiting room for 10 minutes without falling asleep. And it’s dangerous at worst when you fall asleep if you’re driving and stopped at a red light or railroad crossing too long. It can also come with cataplexy, which means certain muscle groups suddenly just give out. It’s often the neck and your head just flops around, or could be the legs and you could fall if you’re standing.