Quote Originally Posted by westtexas View Post
keeping your heels "up" while pedaling can lead to the symptoms you describe.
True - I'd gotten into the habit of "ankling" (i.e., pumping my toes up and down in sync with the pedal stroke) - both because it was fashionable in the '80s and because (as I said), before I installed 165mm crankarms I had to point my toes to reach the pedals at the bottom of the stroke.

It wasn't until years later when I started having Achilles trouble that I had to unlearn that habit. It was a gradual process of learning to pedal with horizontal feet and lowering my seat height little by little.