there is a common thread to my interactions with people as they age. they say things like, 'why am i so tired?', 'why do i need to take a nap after lunch?, 'but i don't feel xx (insert any age over say 40 or so).' when they use the term 'i' they are not referring to their physical selves, they are referring to everything else, call it your mind, your soul, your essence or being, or whatever else describes the non-physical you. the older you become, the wider the chasm that seems to develop between your physical self and your non-physical self.
so here is my theory: unlike our bodies, that are only ever one age at a given point in time, our non-body selves are every age we've ever been or at least can remember being. even at eighty, when our bodies are clearly and irrevocably 80 years old (except maybe that knee replacement), we are still the flirty teenager that fell in love with her high school sweetheart, or the young man that went to war. we actually forget at times what age our bodies have become, at least until they gently remind us.
as an extension of this, i believe it is a mistake, made easily in medicine when the focus of the work is so often in the here and now, so embedded in the physical self, to look at someone at 67 or 75 and see only the 67 year-old or the 75 year-old. it is much more fun and interesting to see the deeper, broader person that they are, the every-year-old in them. so that is what i try to do. and i hope some day that someone will do the same for me.