Bee,
It is funny how that works. I was talking to wifey the other day and said my body is now paying the price for all my youthful stupidity...football, softball and basketball day after day on concrete or asphalt.
As for Hobbes statement...it's correct in a limited sense. To those individuals and cannot be applied to the general hiking population. Personally, I have no desire to go 30 miles a day for one day, let alone 4 months. My style is smell the flowers and take a bunch of pictures...30 miles a day leave little time for either.