For many people, sleep is an elusive thing. This Harvard Medical School paper goes through the science of normal sleep and then dives into the body’s internal clock and insomnia. About 10% of American adults experience chronic insomnia and experience not only restless nights but also dangerous daytime symptoms: drowsiness, impaired concentration, and depression. The paper makes it clear that contrary to popular belief, insomnia is not a disease but a symptom, and there are thus various treatment methods that may help. These include sleep hygiene, behavioral therapy, supplements, and some medications. Sleep is incredibly important to a balanced, healthy, and functional lifestyle–everyone could benefit from thinking more about their daily and nightly habits.

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