We’re usually comfortable deciding whether or not an athlete is doping. Lance Armstrong was definitely doping by using erythropoietin. Tennis player Novak Djokovic, on the other…

Wearing a headband of replica Tibetan prayer flags, Scott Jurek meets me in a park in Boulder, Colorado to demonstrate proper trail-running technique. This isn’t just jogging down…

I tug my black swim cap over my hair, strap on my pink goggles, and keep a focused calm, like Michael Phelps before a race. It’s lap swim on a Monday afternoon at my local YMCA,…

The Greeks were obsessed with the mathematically perfect body. But unfortunately for anyone chasing that ideal, we were designed not by Pygmalion, the mythical sculptor who carved…

In 2011, Hanli Prinsloo decided she wanted to break the woman’s world record in free diving. She would need to dive to 213 feet below the surface of the Mediterranean Sea and hold…