Check out this quote from my favorite author, John D. MacDonald in the book, "Cinnamon Skin." It was written in 1982.
"One very sound rule for the care of the body is always keep in mind what it was designed to do. The body was shaped by the need to run long distances on resilient turf, to run very fast for short distances, to climb trees, and to carry loads back to the cave, so any persistent exercise you do which is not a logical part of that ancient series of uses is , in general, bad for the body. A succession of deep knee bends is destructive, in time. As are too many pushups. As is selective muscle development through weight-lifting. As is jogging on hard surfaces. A couple of years of such jogging and you are very likely never to walk in comfort again. Man is a walking animal, perfectly designed for it. The only more efficeint human energy use is the bicyle."
Anyone else come across anyone primal before Mark?