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Teen can sleep later in

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Do you believe that the earlier you go to bed and the earlier you get up, the healthier, happier, and more productive you'll be? Many people do, and many websites, including this one , offer lots of advice about how to be a morning person and why it's so important to be one. Well, maybe it isn't so important after all. A new study from Harvard traced the sleep habits of 61 students over 30 days and correlated those habits with the students' grades. It found that students who got regular sleep--that is, who went to bed and woke up about the same time every day--did better in school than those who slept irregular hours.
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Let Them Sleep In: Docs Want Later School Times for Teens

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Later School Start Times Really Do Work To Help Teens Get More Sleep : Shots - Health News : NPR

They even analyzed studies linking poor sleep to increased reliance of substances like caffeine, tobacco and alcohol and the effect of sleep deprivation on academic performance. The evidence, they concluded, supports giving teens more time in bed by pushing back the time they have to be at school to at least am. Something about the hormonal changes occurring during that period of development shifts their body clocks, which regulate the balance between sleeping and waking, later, like daylight savings in reverse. Mary Carskadon, a professor of psychiatry and human behavior at Brown University Medical School and director of sleep and chronobiology at Bradley Hospital. But in the 70 school districts involving more than 1, schools that have adopted later start times for high school students, teachers, parents and the students themselves are seeing substantial benefits.
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Why Schools Should Start Later and Teens Should Sleep More

Rao, who is originally from Nanjing, moved to financial hub Shanghai about five years ago to work for a multinational pharmaceutical company. The job quickly took over her life. Often, Rao would stay up surfing the internet, reading the news and watching online videos until well after midnight. Her post clearly struck a chord.
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Patti Neighmond. Teens' biological clock drives them to stay up late and sleep in. Most school start times don't accommodate that drive.
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