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How do you sweat: "typical," "low-salt," or "salty"?
The toughest obstacles that elite military guys must survive.
Tim Johnson on how he conquered one of America's mightiest peaks.
Get out and go this January with these five adventures.
5K race displays your relationship status on your bib.
We spoke to Jed Mildon after he landed the quadruple backflip.
Should You Do a Tough Mudder, Spartan Race, or Warrior Dash?
A 'Death Race', a Gran Fondo, salmon fishing in Alaska, and more.