A British teen reportedly suffers from a rare disorder that causes uncontrollable muscle paralysis when she exhibits strong emotions such as laughter. Speaking to the New York Post, Billie Hodgson, 17 ...

Common narcolepsy symptoms such as excessive daytime sleepiness and sleep paralysis can affect how well you function during ...

And not figuratively, either. Sometimes people have found that certain emotions literally cause their muscles to unhook from their brains. They collapse entirely. This is not some strange disease, or ...