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Why you're not a morning person. (Don't worry, it's not your fault)
Not a morning person? Blame your parents.
A new study out of Germany's Ludwig Maximillians University of Munich reports that a certain gene - called ABCC9 - controls how long a person needs to sleep.
In a survey of more than 4,000 Europeans, scientists determined that those with one variant of the gene needed a shorter amount of shut-eye compared to those with another version. That shorter-sleep gene is linked to heart disease and diabetes.
The gene can also be found in fruit flies, giving scientists a better understanding of the evolution of sleep habits.
Dr. Mark Mahowald, medical director of the Minnesota Regional SleepDisorders Center, told ABC News the study is an eye-opener: "Sleep duration is genetically determined and not a sign of a defect," he said.
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Yep - Early bird gets the worm! No - It takes a pot of coffee to get me up I work too much, I just sleep when I can
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