I was halfway across the Queensboro Bridge when a not-so-unfamiliar feeling hit me: I had to take a shit. I was 1.5 miles into my run, and I had emptied the tank just before I left my apartment. As I ...

A marathon pushes the human body close to its limits. Legs tire, lungs burn and the heart works hard for hours on end. For ...

Running 26.2 miles is one of the most demanding physical challenges you can take on. Beyond the mental toughness and months of training required, your body burns an extraordinary amount of energy ...