That's probably true - but my fear is that I am so competitive that I'd do something to hurt myself and then ignore it in order to finish and end up very badly injured. I used to play rugby and that happend to me a lot - I'd get blinded by the finish (at least back then, I was younger and healed quickly). I could never race MTB for the same reasons! At least in tri - there isn't really anything to run into or trip over...*knock on wood*