Dr. Matt Walker

So that theory was knocked out.

The third theory was one of contagion.

And it's fascinating.

Yawning, like several other things, has a contagious element to it.

So as the audience, unexpectedly, they didn't know what you were going to say.

And before you said it, you told us something interesting about...

And I guarantee you that there will be people listening right now who said, oh, I just yawned in response to Andrew Huberman yawning.

It is very contagious.

In part, it's the mirror neuron system.

And you obviously understand this in depth.

Your brain has this capacity to mirror the action states of other individuals.

So a good example would be, let's say I'm walking out the door now

I'm closing the door with my hand.

And all of a sudden, I'm going to get my hand trapped.

And you on the other side of the room, you are seeing my hand.

And as soon as I trap my hand and I yelp out in pain, you almost hold your own hand.

Because why?

Why are you doing that?

It's not just because...

you're trying to be compassionate.