How to Recover From Chronic Sleep Deprivation

Although the recommended amount of sleep is seven to nine hours a night, more than one-third of Americans get less than seven hours a night, according to a study by the Centers for Disease Control and Prevention.

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Your 'Max Heart Rate' Is Probably Wrong

If you’ve ever worried about your heart rate during exercise being too high or too low, you’ll want to read this. Your "heart rate zone...