Your body can adjust to as little as two or three hours sleep.
A seven to nine hour sleep is must for every adult, though it may vary person to person.
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Naps are a waste of time.
Extra sleep at night can cure you of problems with excessive daytime fatigue.
Getting just 1 hour less sleep per night than needed will not have any effect on...
The only cause of night sweats is menopause.
You should never awaken a sleep walker.