Dr. Matthew Walker

What are the cohorts?

And since we last spoke, is there now a lot of new sleep science and understanding as it relates to sleep performance and these three categories of sleep deficient, sleep disorders, lifestyle factors, and then the optimizers?

That's me.

For your heart?

So the jar represents the debt that you have, the sleep debt.

Oh, so if I've got a big thing coming up where I'm traveling across the world and I know I'm going to be sleep deficient, can I sleep a lot before it to create a, what would the financial analogy be?

So you can create sleep savings.

So he gave them challenges and tasks to do.

Correct.

In two different groups.

One group had sleep savings saved up from sleeping well the previous week.

One group didn't.

That's right.

And they performed remarkably different.

Sleep is so important, isn't it?

And I think everybody now knows that because of people like yourself.

Or really, you know, you were the real pioneer in pushing this subject into the world.

I remember...

When you first went on Joe Rogan's show, the amount of my friends that sent me that episode and then sent me your book was just staggering.

It was like that was the catalyst moment, I think, in society for the mainstream to really start talking and caring about sleep.