This survey aims to reasearch teenagers' sleeping habits.

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* 1. At what time do you usually go to sleep at night?

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* 2. How many hours of sleep do you normally get at night?

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* 3. Do you have difficulty falling asleep once you go to bed?

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* 4. Do you feel refreshed when you wake up in the morning?

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* 5. How often do you feel sleepy during the day?

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