when should we have to sleep at night?
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National Sleep Foundation guidelines1 advise that healthy adults need between 7 and 9 hours of sleep per night. Babies, young children, and teens need even more sleep to enable their growth and development. People over 65 should also get 7 to 8 hours per night.
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Answer:
ham ek Raat mein kam se kam 7 se 9 ghante sote Hain
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