Most every runner has, at some point, had some variation of the following conversation.
Non-Runner: "So, how often do you run, anyway?"
Runner: "Well, I try to get out at least four or five days a week."
Non-Runner: "How far do you run?"
Runner: "Usually somewhere between four and seven miles."
Non-Runner: "Are you crazy?! I only run if something's chasing me!"
Well...at the risk of putting Eric in the spotlight far too many times lately...I just have to make sure everyone reads his Tuesday blog entry. It provides an outstanding answer (though perhaps one that only runners will "get") to the "Why?" question that lurks in that oft repeated "Are you crazy?!" comment.