Adult sleep duration has not declined over the last 50 + years. Another myth busted. https://www.semel.ucla.edu/sites/all/files/Mirwin%20Has%20adult%20sleep%20duration%20declined....pdf …
Data from people on how long they sleep is probably some of the most inaccurate out there. People more honest about the size of their penis.
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It can be measured though.
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