Norwegian scientists have designed a simple calculator that tells you the age equivalent of your fitness level. Experts say those who have a 'fitness age' that is at least a decade younger than their ...

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You're only as old as you feel, goes the saying. Science now has another way of putting it: Chronological age is bunk. For a newly published study, Duke University researchers tracked "multiple ...

Your heart may be aging differently than the rest of you. And, for many Americans, their hearts might be even a decade older than their actual age, new research suggests. Heart disease is the leading ...