Too often, we treat sleep as something we can sacrifice when life gets busy. But a growing body of research finds that sleep is essential to both mental and physical health -- and that sleep problems can be a cause, not just a consequence, of conditions like depression and anxiety. Philip Gehrman, PhD, discusses what happens in the brain while we sleep; how insomnia and disrupted circadian rhythms affect mental health; why psychologists are paying more attention to sleep; and what all of us can do to get better, more restorative sleep.

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