You're Only as Old as You Feel, Right?

The only thing in science that is shown to extend the life span and health span of humans, not ronants, not piglets, of humans, is strength. The more muscle massd they have going into 60 and 65, the longer they live. It's like we need to stop wasting our time with magic beans and magic potions and get in the frigand jim and extend your life. If i'm stronger to day than i was last month, which i am, i'm younger than I was last month. That's it. Yes? You feet.