I was talking to Mary M. at Skinnyman and she was amazed that I do not train or race with a heart rate monitor. I have one. I know I SHOULD use it.. I just don't because it's extra work. It's one of those things that someone will have to force me to do. Just like speedwork. Which is why I haven't done speedwork since I ran XC freshman year @ E-town. Until now, thanks to my marathon plan. I have a long way to go. If I want to improve I cannot continue to pull workouts out of my ass!