What's it like to have a digital trainer? Research editor Justin Nyberg reports.
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Speed hiker Andrew Thompson stomps all over your idea of endurance athletes
This Spanish phenom is one of the world's best sport climbersmale or female
A new documentary takes on the snowboarding revolution—and launches one of its own
Jeb Corliss and Maria von Egidy: Wing People
The growing mob at surfing's premier big wave has tow-in veterans fearing for their lives
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