The Guardian: Poor sleep quality could shorten your life, but research finds strenuous physical activity may undo some of the damage.

Poor sleep quality is, it turns out, really bad for you: those with the worst sleep scores were 67% more likely to die from a heart attack or stroke, and 45% more likely to die from cancer.

That’s exactly the sort of news that keeps me up at night. But the study found that a high level of physical activity “appeared to eliminate most of the deleterious associations of poor sleep and mortality.”

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