It’s done on the fly based on how I’m feeling and responding. Kara Goucher I BEGAN LEARNING THE ART AND SCIENCE of training the way many runners do: by soaking up the wisdom (such as it was) of the coaches who led my high school cross-country and track teams. Oyster River High School in Durham, New Hampshire, had a revolving door of coaches during my years thereI remember five men whom I addressed as Coach at one time or another, and I may have forgotten one or twoand only one of them was an active teacher of the sport. From him I learned a few scattered training principles, such as the idea that the training process should be broken down into a sequence of phases and that the whole point of training was to build toward a performance peak at the end of the process. And that’s about all I learned, except how to do the various types of workouts I did with the teamthat is, how to do the sport. Having quit running in the middle of my senior year and not seriously taken it up again until eight years later, I did not know much more about the art and science of training when I set about training for my first marathon in my mid-20s. The only new idea I applied then was the idea of gradually increasing mileage, which I had learned from watching my dad train for three marathons when I was a kid and from having been a distant observer of my older brother’s training for a marathon during his freshman year of college. I was entirely ignorant, however, of the concept of training workload modulation and, more specifically, of the practice of scattering short recovery periods throughout the training process. Consequently, I tried to increase my overall running mileage and my long run distance every single week throughout the entire training process, which must have lasted at least 12 weeks and probably closer to 16.