It has been dogma that we need eight hours of sleep. Furthermore, the research shows that we don't get nearly that much. In fact, we miss the mark by almost one to two hours each night. Then comes summer, when we typically sleep one less hour than in winter. For those of us trying to maximize sleep, this all sounds disconcerting. I have encouraging news about newer sleep research that has shed some light on how much sleep we should get each night, especially in the summer.

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