| http://www.w3.org/ns/prov#value | - To make matters worse, Cohen says, ???Prior research shows that people start to overrate how they perform when they???re chronically sleep deprived.??? But the inevitable circadian low (roughly 3 a.m. to 7 a.m., when melatonin levels are highest) magnifies the effects of sleep loss, slowing reaction times by a factor of 10???one reason overnight drivers, for example, are especially prone to errors
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