A fascinating article in Scientific American in Jan 2019 called "Evolved to Exercise" (by Pontzer Herman) argues that humans have evolved to be active. We are designed to move a lot every day as we work together to hunt and gather food. We have to work with others and socialize with others... AND we have to move a lot every day because our bodies have grown to require this.
How else can we have come to live throughout the entire world, when most of our primate cousins remain contained to relatively smaller habitation areas?
I got an advance look at this article, and I still cannot find an online link... I'll add it here when I do...