So you make yourself big, you stretch out, you take up space, you're basically opening up.
It's about opening up.
And this is true across the animal kingdom.
It's not just limited to primates.
And humans do the same thing.
So they do this both when they have power sort of chronically, and also when they're feeling powerful in the moment.
And this one is especially interesting because it really shows us how universal and old these expressions of power are.
This expression, which is known as pride, Jessica Tracy has studied.
She shows that people who are born with sight and people who are congenitally blind do this when they win at a physical competition.
So when they cross the finish line and they've won, it doesn't matter if they've never seen anyone do it.