What is the minimum reqd number of hours as a human I need to sleep-  even if I want to reduce my sleeping hours through Power nap.I mean, tp prevent negativr effect of less sleep on health  .
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That's the ultimate question. Depends on your age. Under 21 and less than 8h sleep a night = brain damage. Over 25, you can try polyphasic sleep to reduce your total number of sleeping hours but it takes work and practice. I have a series coming to explain in more detail.
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