Reflections of a stormy petrel

PM, Jennilee, you are two sweet ladies, but perhaps you are a bit young. I am as old as you two put together, at an age when nerve and sinew start getting creaky. I am also large enough to make three of you. Now when I was your age I did go running - 10K every evening, at the best period - and I did get that sense of achievement Jennilee mentions; now, however, I do not know whether I have the elasticity and resilience any more. In fact, I have started on this partly out of a sense that it was now or never again.