Ditto. Never having been 84 before, I really don't know what one is supposed to feel like at 84. I see people in the community that look older and sometimes fat, and sometimes it look very much out of shape, but I don't know their ages. I would feel strange going up to them and saying "how old are you?'
I do know that I can ride a bike and work out pretty well and do a 2 minute plank and a variety of other physical measures. But, I don't know if other 84 year olds do this. So it's difficult to answer the question. I do know that my physical abilities have decreased these last few years. But I'm working hard to keep them as good as possible. I guess that's all I can do!