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Many teens don't get enough sleep, usually because they're busy and tend to skimp on sleep. But sleep problems can keep some teens awake at night even when they want to sleep. Over time, those nights of missed sleep whether they're caused by a sleep disorder or simply not scheduling enough time for the necessary ZZZs can build into a sleep deficit. People with a sleep deficit are unable to concentrate, study, and work effectively. They can also have emotional problems, like depression.

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