Originally Posted by wagathon

You need to put this questions to people on the 50+ forum (or not, if you're not that old yet) and probably ignore responses from young folks (if you are over, e.g., 50); otherwise, it's like asking a chick if they should read the instructions for use before using their wings to leave the nest. Answer: "No--everything just works--or better work--or, you're dead." I think things may get a little more complicated the older your legs get: e.g., trade-offs to be considered--positives and negatives given the range of options. At least, that's my experience: after a bike ride, I often have a short-term ibuprophen deficiency.