Newlywed Ryan Reynolds isn't just sitting around enjoying married life with bride Scarlett Johansson -- he's waking up at the crack of dawn to fulfill a momentous challenge -- running the New York marathon! In a new essay for the Huffington Post , Ryan writes that he's not naturally inclined to run a marathon: "I am not a runner. I'm a running joke." In fact, a few years back he watched the finish of the New York marathon from a comfy vantage point near restaurant Tavern on the Green, and remembers: "People were crying. People were limping, hobbling, screaming, crawling. But most importantly, people were experiencing a sublime rapture that I couldn't even hope to understand." But that didn't convince him, "At that moment, with all the energy, inspiration and passion swirling through the crisp, autumnal air, I breathed in deeply and decided something: I'd never f***ing do that ever, ever." ...