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"Tell me if this sounds familiar: Your alarm goes off at 7:00 am. It's a school day. It's time to get out of bed and get ready to make that early morning bell. But in that moment, you feel as though there is no force on the planet that could make you open your eyes and surrender your comfortable position under the covers. Your mom comes into the room, already dressed for work. "You know," she says, "you wouldn't be so tired if you'd just gone to bed a little earlier." Is she right? Also, why isn't she ever tired in the morning? Most teens would agree that they're much sleepier in the morning than their parents are. There's a single molecule that's largely responsible for this difference. And no, it's not caffeine - it's melatonin!"

"Don't bring your iPad to bed with you if you value your sleep. Researchers at the National Academy of Science published a study on Monday that concludes the "short-wavelength light" (light that's closer to the blue end of the spectrum) messes up the circadian rhythms that govern sleep and suppresses the sleep-inducing hormone melatonin. The result? People reported feeling less tired, and took longer to fall asleep. They were also more tired the next day."