Things That Make You Feel Old

I admire runners - I am not nor have I ever been one. I’ve never run any marathons or anything serious outside of a few charity/community events. For me, it has only been about health and keeping weight off.
It took me a long time to build up to where I am now. With your focus on muscle strength, I’d bet it wouldn’t take you long to back in the swing of things when it comes to running.
Maybe. I no longer have the desire to run anymore. I prefer long walks, biking or hiking. Sometimes I feel nostalgic and think about it for about 60 seconds then I'm like "nah". I made some of my best friends through running/training for marathons. Friendships that have lasted decades. None of us run anymore LOL. One of my friends used to even do Iron Mans after graduating from marathons.