Quiz QUIZ: Are You an Insomnia Expert?

About 10 percent of Americans suffer from hardcore insomnia. Some have trouble falling asleep. The rest of us wake at 3am and stare at the alarm clock for two hours, unable to drift off again. We all have trouble sleeping at one point or another, but do you know what's behind a serious lack of shut-eye? Besides the obvious 4pm cup of coffee, crying baby, too-scary ep of The Walking Dead? Take this trivia quiz and find out how much you know about No-Dream's Land.