Started running again last week. Had a long run yesterday and felt all good about it, so I ran again today.
I completed the run, but now I'm stiff and sore, a sure sign that I overdid it, just a bit. But this new running leg is so comfortable, that I just can't not use it. Besides, I have fitness-based plans for next summer and those races aren't going to run themselves.
Still...as of right now, the carbon-fiber leg is the only part of me that's not giving me negative feedback.
This thing works. I think that they make it out of the same sort of plastic that they make these out of:
I'm still invincible...just old and out of shape. Sigh.