Nah, 60 is not yet old, though I do recall when I did believe that people who were 60 were old. Joints that don’t work as well as they once did can make one feel older though. Fortunately, if I keep up my daily mileage, I have no joints that complain. (I should have a ‘knock on wood’ emoji). I have friends with replacement knees, hips, and elbows. They say it made a huge difference in everything.
I read somewhere a while back that a study found that after age 25 or so, most people feel younger in their brains than their actual chronological age. And that as we age, that mental ‘subjective’ to actual age disparity increases.
I will be 77 this June and feel like I should make it. (knock wood again)