It's so nice to hear of things folk are doing, I know some people who literally do nothing, not because they can't, but because they can't be bothered. I have one 'friend' who plays bowls in the summer, and dose nothing else, another who will go and do nothing, unless I 'drag' her there, but I also have some, even I can't keep up with.
Whether it be doing physical things or mental things, we need to keep as much of out brain and body going.
Keep going,