1. Correlation, Causation
    Lisa Daxer Lisa Daxer United States says:
    August 6, 2018 at 2:53 PM

    How about this: "People who have heart problems tend to need more sleep."

    I can't help but notice this is a correlational study. There's no evidence that sleeping less will decrease your heart disease risk. In fact, if sleeping more is part of the body's way of compensating, it might make things worse.

    Reply
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