So this is how it is done.

I think that I have finally found out how Heidi et al are so strong on their bikes, how they can so easily ride away from me, power up hills, and etc. Surely this is the reason, yes?

http://www.youtube.com/watch?v=8Nd13ARuvVE&feature=player_embedded

Certainly it is the motor -- surely it can't be training, diet, hard work or the fact that they are just plain ole heads and tails better than me -- can it be?