Wired’s Nicholas Thompson: An Aging Marathoner Tries To Run Fast After 40. “In running, the evidence is right there: We ran the same distance and we went slower. What took 10 minutes now takes 11; what took three hours now takes three and a half. The evidence of the damage that time does to our bodies shows up implacably on our watches. I’ve been running for decades, and after almost every slow race I worry that I’ve stepped onto an escalator headed inexorably downward.” (Poor Nick. Over the years, I’ve been able to achieve that exact same sensation just sitting right here on my couch…)

+ Average People Try To Keep Up With World-Record Marathon Pace, Fail Miserably. (Even really good athletes can’t keep a top marathoner’s pace for more than 800 meters or so…)