OP speaks the truth. However, it is possible to turn back the hands of time, at least a little bit.
My plans are to start riding again, join the senior circuit. In order to do this I need to be in much better shape. I've been lifting a little bit for the past year, not trying to get swol, it's just that a little extra muscle helps get the chores done easier. I started rucking several weeks ago. Started with just a short, brisk hike. Been trying to add either weight or distance, or go faster each time. It's amazing how much better I feel when I actually do my work out and don't skip it, which is easy to convince myself to do.
The other day, for the first time in probably close to 10 years, I actually sprinted. Now, I used to be pretty damned fast in my younger days. I'm not that fast anymore, but I actually did a full out sprint. Old sprung knees, ankles that snap and pop - but must be the hiking I've been doing. Nothing seems to grease the old joints like regular exercise.