No; not me. I'll be 83 in June; I continue to be fully employed in the Mathematics Dept. at the University of Rochester -- I'm the oldest faculty member in the math dept; I may or may not be the oldest fully employed faculty member at UR. I continue to do daily vigorous 36 minute exercises on one of the elliptical cross-trainers in my local gym. I don't feel like I'm in my 80's; I feel more like I'm in my 60's.
This past Monday, on entering my gym, I ran into someone exiting who I hadn't seen for years. His name is Howie. He recognized me at once, and was smiling. He was an acquaintance of mine who I hadn't seen since well prior to the pandemic -- he had then been a nonagenarian. He looked pretty much the same as he had previously -- he is short, about my height and slender. The only noticable change in him was that he now held a cane. I told him, you must be a centenarian. He agreed, with a happy smile.
I believe he exercises using the pool. He said that he'd received a tremendous reception at the pool.
Nice to see.
-- Saul