In a 2010 study, Kristen Knutson analyzed time diaries kept by research subjects from 1975 to 2006 and concluded that we are not really sleeping less intrinsically, although people do seem to be working more. This study did not seem to support the idea that members of modern society were sleeping drastically less than their counterparts from a generation ago. The other study that seems to cast doubt as to whether we are sleeping less than we did in the past centered around hunter-gatherer cultures and their sleep patterns. In a 2015 study led by researcher Gandhi Yetish, ninety-four adults
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