Running: Gut check revisited

Well, today was gut check time. My guts, as it turned out, were fine. My knees, however, were another story. The wheels came off at mile 12. I was able to squeeze out one more mile for a total of 13 before I called it a day, having come to terms with the fact that my training (or lack thereof) had caught up with me . A 41-year-old cannot reasonably hope to run a marathon on 2 runs a week, which is all I've been able to manage lately. Lesson learned.