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"Alamy   By Amir Khan  Working nights is tough. Sleeping when the sun is out and working when it&amp;#039;s dark can take a real toll on your sleep schedule, but did you know it could affect way more"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.aol.com/article/2014/10/15/how-to-survive-the-night-shift/20978397/>