There is so much wrong with this picture that I almost didn't submit it, but I don't have anything else. I like the idea and I wish I had a studio or at least a bigger room with plain white wall. That would have fixed the main problems (crop and background and other clutter).
I thought about extracting myself and the bike and changing the background to a different image, but that type of selection work is way above my level of patience.
Makes me think of that movie "The Sweetest Thing" where the guy at the start is talking about Christina and riding the stationary bike... if you see that, you are going to take Art's advice and get a helmet LOLOL
COOL SHOT! I really like the motion and stationary surroundings - gives the image a surrealistic feel. The lines in the wall really make it appear as movement also. Well done.
Oh, I so want a trainer! Nice motion capture, too - and some of the better PS gurus here can help you figure out how to minimize if not get rid of the background. Good self-portrait, though - one good thing about this exercise is getting folks to share a little about themselves and this does that quite nicely!