Dr. Matthew Walker

And the analogy you could use is a drunk driver at a bar. They've had three or four pints. They've had a couple of shots. They pick up the car keys and they say, I'm fine to drive home. And you say, I know that you think you're fine to drive. Trust me, you're not. Let me just grab your cab. I'll take your car keys.

And the analogy you could use is a drunk driver at a bar. They've had three or four pints. They've had a couple of shots. They pick up the car keys and they say, I'm fine to drive home. And you say, I know that you think you're fine to drive. Trust me, you're not. Let me just grab your cab. I'll take your car keys.

And the analogy you could use is a drunk driver at a bar. They've had three or four pints. They've had a couple of shots. They pick up the car keys and they say, I'm fine to drive home. And you say, I know that you think you're fine to drive. Trust me, you're not. Let me just grab your cab. I'll take your car keys.

And it's also the same with your natural chronotype tendencies versus overdriving it and trying to force yourself to be, let's say, a night owl when you're actually not a night owl. I would also say that when you start to get very regular and you sleep in harmony with your chronotype, you start to not need an alarm.

And it's also the same with your natural chronotype tendencies versus overdriving it and trying to force yourself to be, let's say, a night owl when you're actually not a night owl. I would also say that when you start to get very regular and you sleep in harmony with your chronotype, you start to not need an alarm.

And it's also the same with your natural chronotype tendencies versus overdriving it and trying to force yourself to be, let's say, a night owl when you're actually not a night owl. I would also say that when you start to get very regular and you sleep in harmony with your chronotype, you start to not need an alarm.

And that's the other strange thing, by the way, human beings seem to be the only species that will deliberately deprive themselves of sleep for no apparent good reason. And often when people say, how do I know if I'm getting enough sleep? One question I'll ask is if your alarm goes off in the morning, You wake up, but if your alarm didn't go off tomorrow morning, would you sleep past your alarm?

And that's the other strange thing, by the way, human beings seem to be the only species that will deliberately deprive themselves of sleep for no apparent good reason. And often when people say, how do I know if I'm getting enough sleep? One question I'll ask is if your alarm goes off in the morning, You wake up, but if your alarm didn't go off tomorrow morning, would you sleep past your alarm?

And that's the other strange thing, by the way, human beings seem to be the only species that will deliberately deprive themselves of sleep for no apparent good reason. And often when people say, how do I know if I'm getting enough sleep? One question I'll ask is if your alarm goes off in the morning, You wake up, but if your alarm didn't go off tomorrow morning, would you sleep past your alarm?

If the answer is yes, then it tells me that your body's not done with sleep. And no other species does that. They just sleep until they're done with sleep. But we will naturally terminate that for all sorts of different reasons. And so I like the idea that you will wake up no matter what at 7 a.m. It tells me something about your unique biology.

If the answer is yes, then it tells me that your body's not done with sleep. And no other species does that. They just sleep until they're done with sleep. But we will naturally terminate that for all sorts of different reasons. And so I like the idea that you will wake up no matter what at 7 a.m. It tells me something about your unique biology.

If the answer is yes, then it tells me that your body's not done with sleep. And no other species does that. They just sleep until they're done with sleep. But we will naturally terminate that for all sorts of different reasons. And so I like the idea that you will wake up no matter what at 7 a.m. It tells me something about your unique biology.

Now, my guess is that even if I put you into bed at 2 a.m., you're probably not going to sleep the same duration that you would do otherwise. 7 a.m. I'll be awake. and wrench you out at 7 a.m. So you're getting closer to understanding what your biological rhythms are, at least at sleep offset.

Now, my guess is that even if I put you into bed at 2 a.m., you're probably not going to sleep the same duration that you would do otherwise. 7 a.m. I'll be awake. and wrench you out at 7 a.m. So you're getting closer to understanding what your biological rhythms are, at least at sleep offset.

Now, my guess is that even if I put you into bed at 2 a.m., you're probably not going to sleep the same duration that you would do otherwise. 7 a.m. I'll be awake. and wrench you out at 7 a.m. So you're getting closer to understanding what your biological rhythms are, at least at sleep offset.

Talk to me about the relationship between timing and regularity, because it seems like those two are intrinsically linked. Some people might have even confused it. Yeah. How important is it to get regularity if we're getting enough of it?

Talk to me about the relationship between timing and regularity, because it seems like those two are intrinsically linked. Some people might have even confused it. Yeah. How important is it to get regularity if we're getting enough of it?

Talk to me about the relationship between timing and regularity, because it seems like those two are intrinsically linked. Some people might have even confused it. Yeah. How important is it to get regularity if we're getting enough of it?

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.

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.