Another incident of Oldness: I was happy with myself that I ran as soon as I got up, then took the guy to camp, then went about the workday.
However, I forgot to stretch beyond a cursory stretch for a few minutes when I got back from the run.
This afternoon, my lower back started getting sensitive, then stiffened up. After sitting in a dining table chair during D&D, it has become completely stiff, and I can’t stand up straight.
It could be something else entirely, but I do think it was the lack of stretching because my upper legs are really tense, which pulls on the lower back.
Anyway, I hope I don’t skip stretching from here on out.