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  Sacrificing sleep for extra study is counterproductive according to a UCLA study published in the journal, Child Development. For 14 days, 535 high school students kept diaries on how long they studied, how long they slept, and whether or not they experienced academic problems. Today's educational system is built on competitiveness and rewards...

Cutting back on sleep drastically lowers testosterone levels in young male adults. Less than five hours a night of sleep had significantly lower levels of testosterone than controls. After just one week of less than five hours a night of sleep resulted in a 10-15% decrease in testosterone levels. Low levels of testosterone lead to low energy, reduced libido,...