So I’m at the gym this morning, lifting a few weights and doing my best to avoid (or at least postpone) decrepitude, and at one point I turned to the person next to me and said, “How come this never gets any easier?” He laughed appreciatively at my joke (in my mind that’s what he did; in reality he looked at me, blinked, and then moved over to a different station across the room), and I went back to my ...