Study: That Workout Probably Wasn't As Hard As It FeltEven if you’re huffing and puffing through your morning run, you might not be working out as hard as you think.
Study: Regardless Of Physical Fitness, High Resting Heart Rate Connected To Earlier DeathResearchers say the study was conducted in order to find out whether or not resting heart rate was an independent risk factor for death or merely an indicator of physical fitness.

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