how to remain active? well mentally active..

I did go through a little phrase where I watched the house of games... not sure why I stopped - maybe it didn't interest me as much as I thought it had

Play video games, play chess against the AI on Xbox, watch Richard Osmans house of games and 8 out of 10 cats does countdown and try to get the answers. I also read a lot.

Hadn't thought about learning a language!  Might see which language speaks to me the most and try learn some

I did some research into horses and some dog breeds, by getting books from library, I would do that again for subjects!

I'm not good at chess but I remember I like playing it maybe will see if we have a chess board laying around and see if I can get someone to play with!

Unfortunately I'm unemployed at moment so don't have work to keep mentally active 

Not thought of watching lectures or long form information videos! Will have to think at what would interest me and give a go

What are alpha puzzles? Not heard of them before

Journaling and reading. I could do more though.

I'd say language learning and consistently using two languages is a great way to stay sharp. 

I do various puzzles, watch Countdown when not working. I watch some quiz shows. If I hear something mentioned I didn't know about I research it.

I sometimes do things with my non dominant hand, which I've heard is good for your brain.

It's not my thing, but online chess could be an option

I watch lectures and a lot of long form information type videos on YouTube. I am also always looking things up, whenever I think of things which is multiple times especially a day. I ve always tried to learn something new every day for decades.

I do various puzzles, such as sudoku. I try to read but I read slowly.

There is also work.

Just found this website that gives ways

5 Steps to mental wellbeing

It is remarkably fiddly and I tend to swear from time to time.

Read, like Martin fiction and non fiction, mostly medieval and preRoman history. I do lots of puzzles daily, crosswords both concise and cryptic, word searches and alphapuzzles. Genelogical research, I've just had my DNA results back from Living DNA so I can find out more about my deep ancestry. Watch news and current affairs programs. Use AI to find stuff out, ask it random questions and see where it takes me and often surprise it with the links I make, I told it to stop flattering me and telling me how clever and unusual I am and it told me that the stuff I ask about and know put me at an upper educational and professional level, I still think it's flannel.

Martin said:

I repair old pocket watches

that sounds like a good thing to be doing! 

I read a lot, both fiction and non-fiction (mostly history), write stuff on Wikipedia (mostly history again) and I repair old pocket watches.