Dr. Matthew Walker

Like sleeping during the day, but staying up at night, you already mentioned kind of dampened it a little bit for the night owls to say, well, you know, it's not your fault and so on and so forth. But I imagine that there is some predictive power for mortality for people that are waking and sleeping more aligned with when the sun is up, when the sun goes to bed, et cetera.

more aligned if they're sleeping in harmony with their chronotype. So if evening types are sleeping like morning larks, their sleep quantity is shorter, their sleep quality is far worse. And that's the reason why they have higher rates of mental illness, psychiatric conditions, higher rates of diabetes, higher rates of obesity, higher rates of hypertension, stroke, and heart attack. So

more aligned if they're sleeping in harmony with their chronotype. So if evening types are sleeping like morning larks, their sleep quantity is shorter, their sleep quality is far worse. And that's the reason why they have higher rates of mental illness, psychiatric conditions, higher rates of diabetes, higher rates of obesity, higher rates of hypertension, stroke, and heart attack. So

more aligned if they're sleeping in harmony with their chronotype. So if evening types are sleeping like morning larks, their sleep quantity is shorter, their sleep quality is far worse. And that's the reason why they have higher rates of mental illness, psychiatric conditions, higher rates of diabetes, higher rates of obesity, higher rates of hypertension, stroke, and heart attack. So

you can see that the consequences of fighting back against that biology. Now, it can also work the opposite way too. If you've got a morning type that's sleeping like a night owl, which rarely happens in society because society is so biased. Exactly. But you are the archetypal example. What happens there is that you are going to bed late and you will necessarily, you will still be short slept.

you can see that the consequences of fighting back against that biology. Now, it can also work the opposite way too. If you've got a morning type that's sleeping like a night owl, which rarely happens in society because society is so biased. Exactly. But you are the archetypal example. What happens there is that you are going to bed late and you will necessarily, you will still be short slept.

you can see that the consequences of fighting back against that biology. Now, it can also work the opposite way too. If you've got a morning type that's sleeping like a night owl, which rarely happens in society because society is so biased. Exactly. But you are the archetypal example. What happens there is that you are going to bed late and you will necessarily, you will still be short slept.

Now, the night owl that's getting forced to sleep like a morning type is going to struggle to sleep on the front end, because they're not ready for sleep. Your problem is the opposite. You are going to bed far later than you would normally naturally like to do, and you will fall asleep ever so quickly.

Now, the night owl that's getting forced to sleep like a morning type is going to struggle to sleep on the front end, because they're not ready for sleep. Your problem is the opposite. You are going to bed far later than you would normally naturally like to do, and you will fall asleep ever so quickly.

Now, the night owl that's getting forced to sleep like a morning type is going to struggle to sleep on the front end, because they're not ready for sleep. Your problem is the opposite. You are going to bed far later than you would normally naturally like to do, and you will fall asleep ever so quickly.

The problem is you want to get your seven to nine hours and sleep later into that morning, but you're awake at seven.

The problem is you want to get your seven to nine hours and sleep later into that morning, but you're awake at seven.

The problem is you want to get your seven to nine hours and sleep later into that morning, but you're awake at seven.

That was less of a problem when I was younger. Again, this whole thing sort of started when I started to get regularity. It was like, I don't know, I was an MMA fighter. from a sleep perspective and sort of just sometimes ground and pound and sometimes stand up game. And other times it was Brazilian jujitsu, whereas now I've just pivoted into one particular type.

That was less of a problem when I was younger. Again, this whole thing sort of started when I started to get regularity. It was like, I don't know, I was an MMA fighter. from a sleep perspective and sort of just sometimes ground and pound and sometimes stand up game. And other times it was Brazilian jujitsu, whereas now I've just pivoted into one particular type.

That was less of a problem when I was younger. Again, this whole thing sort of started when I started to get regularity. It was like, I don't know, I was an MMA fighter. from a sleep perspective and sort of just sometimes ground and pound and sometimes stand up game. And other times it was Brazilian jujitsu, whereas now I've just pivoted into one particular type.

So I think, um, giving myself a little bit more structure has resulted in a kind of lock-in with my sleep that I didn't have before. I was able to shift that window around. And again, maybe it was not too dissimilar to, um, squeezing down sleep so that you get sleep efficiency, but

So I think, um, giving myself a little bit more structure has resulted in a kind of lock-in with my sleep that I didn't have before. I was able to shift that window around. And again, maybe it was not too dissimilar to, um, squeezing down sleep so that you get sleep efficiency, but

So I think, um, giving myself a little bit more structure has resulted in a kind of lock-in with my sleep that I didn't have before. I was able to shift that window around. And again, maybe it was not too dissimilar to, um, squeezing down sleep so that you get sleep efficiency, but

Everybody that's a shift worker that's listening to this, or most of the people that are shift workers, because I would imagine if you couldn't deal with it, if you were insufficiently sleep flexible when it comes to moving around your shift work, you would have lasted a couple of years and been like, I can't keep doing this. It's just going to kill me.