Much to my surprise, back in the late 1980s, my body taught me that running for exercise is fun.
Three years earlier, I took up running because it would be “good for me” and because I wanted to be in shape as I approached middle-age. I am not a “good” runner; I am not fast. I am something called a “mid-pack” runner. I would run relay races so other people would be counting on me, so I had to be out there running, whether I wanted to...