I'm nearing retirement age, but I haven't become less physically capable. I think I've become more physically capable than when I was younger, actually, because

I'm nearing retirement age, but I haven't become less physically capable. I think I've become more physically capable than when I was younger, actually, because I'm more physically active now than I was in my younger days (I've never been entirely sedentary, but developed hobbies in my 40s that involved greater physical activity).