If you're a runner, you probably know that not everything about running feels great—especially when digestive troubles strike mid-run. One of the most frustrating issues? Running-induced diarrhoea, ...

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 ...