I was reading the [television and cognitive decline](https://www.nature.com/articles/s41598-019-39354-4) thread and it got me thinking: what are the best (i.e. most efficient and proven effective) ways to improve cognition?
It seems there are a lot of services out there that purport to provide some benefit, but I'm hoping some folks in this community can point to something true, even if it isn't necessarily fashionable.
It seems there are a lot of services out there that purport to provide some benefit, but I'm hoping some folks in this community can point to something true, even if it isn't necessarily fashionable.