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Aside from having killer calves and incredible lung capacity...
Check out photos and footage of the epic 100km journey.
Things are looking up for guys who bike.
Make the most of a cold and snowy sweat session.
Yes, you can do it. Here's how.
Meet Larry Macon, Guinness World Record holder.
A SEAL Team 6 member on what it takes to be a 'tactical athlete'.
Running, swimming, and walking can keep you feeling great.