Interesting post. Thanks.

The feet thing is a strange one. They definitely need to get trained and stay trained like everything else, but I am not sure what all the mechanisms are with feet. I am speaking mostly about sore feet, as I've never had that much trouble with blisters etc, unless I ask for it. I'm speaking more about muscle and bone pain, not sure if its one or the other or both, and how training makes feet stronger, or number. I was thinking the other day that endorphines, or something like them, might get released not just by pain but just from the alternating pressure on the feet from walking. I think there must be some sort of chemical that makes you enjoy the rhythm and want to keep going. Must be a visual thing to though, and some sense of purpose, but I think the natural drugs must be their to help also.