Athletic Extremism: When Exercise Turns Deadly
The results are far from damning, but a study in this month's Mayo Clinic Proceedings presents evidence that excessive endurance exercise could do lasting damage to the heart
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Interview Issue 2012: Sprinter Justin Gatlin on Making a Comeback
The Olympian on beating Bolt and how he came back from his doping ban
Of Bears and Gazelles: Scott Jurek on How Determination Wins Every Time
Born with scoliosis and a left foot that toes out, the running legend focused on distance, where length could forgive injury, fatigue, bad form, and illness. In an ultra, the most important thing is your mind—and your willingness to push on.
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