Originally Posted by
PeteHski
To keep your feet firmly in the optimum position on the pedals, with no risk of slipping off.
The pulling up is a big floppy red herring. The best you can do there is unweight your leg on the upstroke to reduce the negative torque from its own weight on the pedal. Not even pro cyclists generate any significant positive torque on their upstroke.
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I could have sworn I pulled up on a regular basis. Not only did I feel it(or at least I thought I did) I had abs! I miss abs. The last crash I had, I only scraped my obliques because the protruded the most.
This was a long time ago. Now I have flabs. Kind of ab shaped but mushy.
Oh well, so goes life.