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Do you really need 8 hours of sleep? Separating myth from fact

Can you catch up on sleep over the weekend? How many hours of sleep do you really need? NBC News medical contributor Dr. Natalie Azar puts some common sleep myths to bed. Find out what you can do to feel more rested throughout the day.
/ Source: TODAY

Can you catch up on sleep over the weekend? How many hours of sleep do you really need? NBC News medical contributor Dr. Natalie Azar puts some common sleep myths to bed. Find out what you can do to feel more rested throughout the day.