I had a conversation with an elderly neurologist at a wedding on this topic. His top item of advice was to do things that put your awareness into your moving body as much as possible, as a daily habit. No surprise he and his wife were the only folks in their age bracket rocking out on the dance floor later.
Interesting. Does that mean that mostly relying on muscle memory is not as beneficial in this context? E.g. if you're already good at some technical sport (e.g. tennis, basketball), playing it wouldn't be as beneficial as, say, learning a new dance?
