What Keeps You Stronger When You're Old?

I would add on what keeps you stronger when you're old. Like, that's probably my only other thing that like I look at from a principal standpoint. Working with Jerry Atrods and like nursing homes. There's just such a huge discrepancy between those who were active and worked out and took care of themselves compared to those they didn't. So that's kind of that was a big change in how I looked at some of this stuff.