I’ve never considered myself an athlete either as I’ve never really competed at a high level. But I’ve played on a lot of teams in a number of different sports. Interestingly when I was working my teammates voted me most athletic of the group I guess just because I’d ride 100 milers???
Anyway I’m seeing some of the downward trajectory as well. I’m wondering if the bike crash, hip replacement and time away from the physical routine has accelerated it??? I’ve lost distance in my golf game, I’m riding a lot slower, so much I can’t stay with the group where I used to be one of the stronger riders just last year. My speeds are noticeably slower. All of that has occurred in the last few months. I’m 66 as well and noticed similar changes a few years ago but not this dramatic. I can still ride distances but at a much more moderate pace. I guess we’ll know for sure in due time!