Dean Karnazes, the forty-four-year-old Californian who has appeared on 60 Minutes, The Tonight Show, and countless magazine covers for his mind-bending feat of running fifty marathons in fifty days (in fifty different states). He also ran 350 miles without stopping. Only slightly less impressive to me is that over the past fifteen years, the longest period he has gone without exercising is three days. “I had the flu,” Karnazes recalls. “I was still sick, but I finally said, Screw it, I need to bust out a run.” For starters, his streak says something about the formidable strength of his immune
...more
