Excite and Inhibit

OMG OMG! A person in the 50's in United States wants to know, "what is the one most important thing to do to slow the aging of the brain and boost its function"

Here's an answer:
As they say, use it or lose it. Your brain cells and their connections grow with specific use, and decline without it, so do puzzles, read, and stay active. Read More

Wow, the brain is so cool!
Hey, what's the one thing you wish you knew about the brain?