Am stating the obvious I know HV, but all this of course has everything to do with simplicity. That if one is given a chance, and the human body can be at time pretty forgiving for awhile before giving-out, is to listen to what the body is telling us. Keen, highly vested observation, is our friend. Gee, like I just invented a new concept. Hardly.
Of course, there is one thing that gets in the way of all that grand theory. Habits. Sigh.