Dr. Matthew Walker

Regularity beat out quantity in predicting all-cause mortality, cancer mortality, cardiovascular mortality. Now, it's not to say that you can get away with short quantity of sleep, even if you're highly regular, you know. Getting four hours of sleep at the same time every night, you still have markedly elevated mortality risk.

Regularity beat out quantity in predicting all-cause mortality, cancer mortality, cardiovascular mortality. Now, it's not to say that you can get away with short quantity of sleep, even if you're highly regular, you know. Getting four hours of sleep at the same time every night, you still have markedly elevated mortality risk.

Regularity beat out quantity in predicting all-cause mortality, cancer mortality, cardiovascular mortality. Now, it's not to say that you can get away with short quantity of sleep, even if you're highly regular, you know. Getting four hours of sleep at the same time every night, you still have markedly elevated mortality risk.

But nevertheless, I was pretty stunned by how powerful that was and made me even, someone who was pretty regular before, get a bit more evangelical about it, you know?

But nevertheless, I was pretty stunned by how powerful that was and made me even, someone who was pretty regular before, get a bit more evangelical about it, you know?

But nevertheless, I was pretty stunned by how powerful that was and made me even, someone who was pretty regular before, get a bit more evangelical about it, you know?

We'll get back to talking to Matthew in one minute. But first, I need to tell you about Mantis sleep. There are thousands of dollars of lights pointed at my face right now. But because of Mantis sleep mask, all I can see is complete blackness. Literally, it feels like I'm in pitch black at the moment. That's why I'm a massive fan of them.

We'll get back to talking to Matthew in one minute. But first, I need to tell you about Mantis sleep. There are thousands of dollars of lights pointed at my face right now. But because of Mantis sleep mask, all I can see is complete blackness. Literally, it feels like I'm in pitch black at the moment. That's why I'm a massive fan of them.

We'll get back to talking to Matthew in one minute. But first, I need to tell you about Mantis sleep. There are thousands of dollars of lights pointed at my face right now. But because of Mantis sleep mask, all I can see is complete blackness. Literally, it feels like I'm in pitch black at the moment. That's why I'm a massive fan of them.

The problem with most sleep masks is that they're made with cheap materials, they let too much light in, they push up against your eyelids, and they're just uncomfortable, especially for side sleepers. Look at that. You can see here how amazing the inner part of the eye mask is, where it doesn't touch your eyelids at all.

The problem with most sleep masks is that they're made with cheap materials, they let too much light in, they push up against your eyelids, and they're just uncomfortable, especially for side sleepers. Look at that. You can see here how amazing the inner part of the eye mask is, where it doesn't touch your eyelids at all.

The problem with most sleep masks is that they're made with cheap materials, they let too much light in, they push up against your eyelids, and they're just uncomfortable, especially for side sleepers. Look at that. You can see here how amazing the inner part of the eye mask is, where it doesn't touch your eyelids at all.

Mantis masks were made with all of this in mind to make the perfect mask for all types of sleepers, made of soft, breathable materials. They've got an adjustable strap that can fit even the weirdest shaped head. Dr. Mike Israetel, this could be for you. I use this mask every night when I'm at home. I use it when I'm on travel. There's one in every single travel bag I've got, even for midday naps.

Mantis masks were made with all of this in mind to make the perfect mask for all types of sleepers, made of soft, breathable materials. They've got an adjustable strap that can fit even the weirdest shaped head. Dr. Mike Israetel, this could be for you. I use this mask every night when I'm at home. I use it when I'm on travel. There's one in every single travel bag I've got, even for midday naps.

Mantis masks were made with all of this in mind to make the perfect mask for all types of sleepers, made of soft, breathable materials. They've got an adjustable strap that can fit even the weirdest shaped head. Dr. Mike Israetel, this could be for you. I use this mask every night when I'm at home. I use it when I'm on travel. There's one in every single travel bag I've got, even for midday naps.

This thing is unbeatable, so comfortable, and they've got a 60-night sleep trial. So you can buy it and sleep with it on for 59 nights. If you don't like it for any reason, they'll give you your money back. Plus, they offer free US shipping and they ship internationally. Right now, you can get 10% off the best sleep mask

This thing is unbeatable, so comfortable, and they've got a 60-night sleep trial. So you can buy it and sleep with it on for 59 nights. If you don't like it for any reason, they'll give you your money back. Plus, they offer free US shipping and they ship internationally. Right now, you can get 10% off the best sleep mask

This thing is unbeatable, so comfortable, and they've got a 60-night sleep trial. So you can buy it and sleep with it on for 59 nights. If you don't like it for any reason, they'll give you your money back. Plus, they offer free US shipping and they ship internationally. Right now, you can get 10% off the best sleep mask

On the planet by going to the link in the description below or heading to mantasleep.com slash modern wisdom and using the code modern wisdom at checkout. That's M-A-N-T-A sleep.com slash modern wisdom and modern wisdom. A checkout. How big of a wobble are we talking in terms of tolerance here? People can't just go to sleep at the same time, the same minute, every single night.

On the planet by going to the link in the description below or heading to mantasleep.com slash modern wisdom and using the code modern wisdom at checkout. That's M-A-N-T-A sleep.com slash modern wisdom and modern wisdom. A checkout. How big of a wobble are we talking in terms of tolerance here? People can't just go to sleep at the same time, the same minute, every single night.