Recently we had a lovely dinner with our fitness friends. Think lean, no body hair whatsoever, and lots of talk of training and RunKeeper. I casually said to the husband, “I could never do a triathlon.” His response, “I could never write a book.” This quieted me. I had never considered what I was doing as anything comparable to the titanic training involved in these high-powered workouts. I sit on a chair for hours at a time! I can devour bags of Twizzler bites and daydream out my window while my resting heart rate does just that!