I've thought about this quite deeply. It sounds a stupid thing to spend cognitive energy on thinking about, but why does the snooze button exist?

I actually think it's quite profound. The snooze button existed because we are always as a first world society, carrying some form of a sleep debt.

Because the alarm goes off and your instant urges, let me sleep longer. And the snooze button I think is the perennial expression of the human frustration of this thing called a chronic lingering sleep debt.

Welcome to the Knowledge Project Podcast. I'm your host Shane Parish. The goal of this show is to master the best what other people have already figured out, so you can unlock your potential.

To that end, I sit down with people at the top of their game to uncover what they've learned along the way.

Every episode is packed with timeless ideas that you can use in life and business.

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Dr. Matt Walker, professor of neuroscience and psychology, and the founder of N-director of the Center for Human Sleep Science at the University of California Berkeley, joins me today.

Matt is the author of the best-selling book, Why We Sleep. Like many of you, I'm interested in improving my sleep.

To that end, this is one of the first of a few episodes that will explore sleep through different lenses.

We discuss sleep stages, how we know we're getting enough sleep, caffeine, alcohol, the different types of insomnia, including the one that seems to affect a lot of people I know where they wake up in the middle of the night and they can't get back to sleep.

We have a controversy around some of his work, and which parts of the critique he agrees with, and so much more.

One thing to note is that Dr. Walker is not a medical doctor, and anything in here is just opinion.

Before you do anything or make major changes to your sleep, or your routines, it's wise to consult with your physician.

Time to listen and learn.

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