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mesoteto said:
its been proven the humane body only needs 4 hours of sleep to function---anything after that /uptill 7-8 is extra after that cut you start to have negative effects on the body

That's not true. I did a report on sleep studies a few semesters ago.  Each individual person requires their own unique amounts of sleep to function at maximum capacity.  Some need as much as 10, others as few as 4.