This article was originally posted on RealClearScience.
Fans of the 2001 movie Rat Race will remember that Rowan Atkinson’s character suffered from narcolepsy. Moments before claiming the $2-million cash prize, he fell asleep. In real life, not only do narcoleptics suffer from irresistible daytime sleepiness, but they also have trouble sleeping at nighttime and may physically collapse from sudden muscle weakness, a symptom known as cataplexy. But, what causes it? Continue reading