What a 'Normal' Resting Heart Rate Should Really Be - msnNOW

See if yours is too high, too low, or in the healthy zone.

© jacoblund - Getty Images What is a normal, healthy resting heart rate, and what it means if your heart is beating slower or faster than it should. 2.5 billion. No, it's not how old the Earth is.… [+6285 chars]

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