Heart-rate apps bring Olympic-caliber recovery to everyone.
Inside the often unfortunate, sometimes weird, and occasionally gruesome drawbacks of fitness fanaticism.
As the sport emerges from its grassroots beginnings, it finds itself at a rather challenging inflection point.
"If the Altra IQ can make a dent in the astronomical injury rates runners experience, this shoe will spawn a revolution."
The treadmill has long been synonymous with monotony — a place to zone out and pretend you're not watching E!
Our innate desire for adventure has some going big in the mountains.
The guy who is snagging Kilian Jornet’s speed records is just getting started.
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