2017-02-11 18:55 thomas.godart "Sleeping 8 Hours Straight Isn't How Your Ancestors Did It" Sleeping 8 Hours Straight Isn't How Your Ancestors Did It description Big Think http://bigthink.com/ideafeed/sleeping-8-hours-straight-isnt-how-your-ancestors-did-it labelBig Think check_box labelsleep check_box_outline_blank labelinteresting check_box_outline_blank