Another activity that I have heard as slowing down mental decline is dancing: https://blog.frontiersin.org/2017/08/29/dancing-can-reverse-the-signs-of-aging-in

Another activity that I have heard as slowing down mental decline is dancing: https://blog.frontiersin.org/2017/08/29/dancing-can-reverse-the-signs-of-aging-in-the-brain/ https://blog.frontiersin.org/2017/08/29/dancing-can-reverse-... Regardless of this dubious study, I will continue to solve crosswords. Cryptic crossword solvers were prized in Bletchley Park, since it was seen as evidence of lateral thinking. [1] I used to look down upon quick crosswords since they were too direct, but lately I have tried to time myself solving quick crosswords, and I find that they can be challenging as well when tried in a genuine quick mode - they involve jogging the memory at a very fast rate. [1] https://www.telegraph.co.uk/history/world-war-two/11151478/Could-you-have-been-a-codebreaker-at-Bletchley-Park.html https://www.telegraph.co.uk/history/world-war-two/11151478/C...