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Is there such a thing as too much fitness?

Is there such a thing as too much fitness?

Should we all strive to be marathoners? | Chen Jimin/China News Service/VCG/Getty Images If 2025 proved one thing, it’s that Americans’ interest in maximal fitness is higher than ever. ...

A world without flu is possible

A world without flu is possible

This year is shaping to be a tough flu season, with less than half of adults getting a flu shot. | Hugh Hastings/Getty Images Let’s start with the bad news. There’s a decent chance, perhaps as high...