Every day people spend sixteen or so hours working, playing, eating, reading, operating computers of all types, and doing what needs to be done.\u00a0\u00a0People sleep \u2013 usually at night —\u00a0\u00a0for approximately eight hours, although some sleep much less and a few sleep more. The transition between being awake and being asleep is so subtle that we don\u2019t even notice going from one world to the other.<\/p>\n","protected":false},"excerpt":{"rendered":"