According to [url=http://www.theatlanticcities.com/jobs-and-economy/2013/08/how-poverty-taxes-brain/6716/]this article[/url]:
[quote]...saddled with a mental load that was the equivalent of losing an entire night’s sleep. Put another way, the condition of poverty imposed a mental burden akin to losing 13 IQ points...[/quote]
So yeah, interesting stuff...
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Well you can die quicker from no sleep than no food so yeah.