I don't diet but I do train because I believe I'm an athlete. I eat very well all year round (Mr Void is a Vegetarian and a Personal Trainer). And I run, lift weights, and do some hard core biking on the days I don't ride.
I'm considering going all Veggie and cutting dairy out of my diet (for health reasons and well I'm allergic to dairy I have no clue why I continue to eat it when it makes me totally sick lol)
Gordon Wright once told a student to take up swimming because he would never be a good rider, that rider was George Morris.