I still don’t understand how we could have evolved.
How could we not evolve? The slower runners got eaten, the faster runners got to be parents.
When a critter such as a bear is chasing you, you better learn to run or get eaten...Run Forest, Run!
Better yet, learn that you can't out run the bear but you don't really have to...just out run the people in your party.
I walk, and I struggle to run.