o 20%. University of Texas said, "Awesome." Now, how many of you knew that this refers to helping or volunteering outside the home? I don't know why they said outside the home. Seems like helping anywhere would be good. But does that make sense to you that if you become a helpful person that it would be good for your own brain?

Here's why that makes sense to me. I have to admit I didn't know that. So if you'd asked me, I'd say it feels reasonable to expect it, but I didn't know it. And the reason I would have expected it is you've heard me talk about how people are healthiest when they're pursuing whatever is closest to their biological evolutionary reality. So I believe that people stay healthier. This is just a hypothesis, but I think it's true that if the closer you are to the mating process, the single most important thing that a human can do, because mating is sort of organized our entire evolutionary path from a million years ago. So if you're an