Dr. David Eagleman

will be less active.

You won't have as much activity in your brain.

All my brain is on fire with activity because why I'm trying to figure out, okay, where do I put my hand?

How do I throw this and blah, blah, blah.

So when I'm a novice at something, my brain is using much more activity, not just the anterior made cingulate, but tons of activity all over because I'm trying to figure out the rules.

I'm trying to figure out what's going on.

You as an expert, you're

You know, you got it.

You don't need to burn much activity.

This is what the brain's goal is, is to say, hey, once I've practiced something a lot, once I get something about the world, I'm going to burn it deeper and deeper into the circuitry so I don't have to burn a lot of energy on it.

I mean, it wouldn't be so much the willpower muscle.

It would be some indication retrospectively of how hard you have worked.

Look, the fact is you can see changes in brain size with lots of things.

I'll give you an example.

If you are a pianist, if you play piano, then...

we can actually see physical changes in your motor cortex.

This is the part of the brain essentially underneath where you'd wear headphones.

For those who are looking visually, it's this red part here.

You actually get a bigger loop of tissue here than you do in a normal brain.

Why?