A friend of mine who is younger that me retired. he walked all the time to stay in shape, and is a health nut. I recently saw him and hardly reconized him . He walks with a walker all bent over and can hardly get one foot ahead of the other. can barley talk.from strokes ETC. I think too much exercise is worse than no exercise, it simply wears you out.My excerise consists of mowing the lawn, riding my Horse and damm little else. sure I have cancer and it may get me some day but I am in better shape than some others my age that exercised all the time.. grin