Dr. Matthew Walker

The number one predictive behavior for a good night's sleep was caffeine. The number one predictive behavior for a good night's sleep was caffeine. So is there a...

uh method or would you ever encourage somebody to use caffeine in terms of its timing to help bring you into land from an adenosine perspective uh so that you sleep more easily so that your latency is reduced or whatever from all of the data there's nothing to say that you should advocate for it as a sleep aid i think there's some data to say it may be equivocal that at least moderate doses of caffeine have any effect on your sleep

uh method or would you ever encourage somebody to use caffeine in terms of its timing to help bring you into land from an adenosine perspective uh so that you sleep more easily so that your latency is reduced or whatever from all of the data there's nothing to say that you should advocate for it as a sleep aid i think there's some data to say it may be equivocal that at least moderate doses of caffeine have any effect on your sleep

uh method or would you ever encourage somebody to use caffeine in terms of its timing to help bring you into land from an adenosine perspective uh so that you sleep more easily so that your latency is reduced or whatever from all of the data there's nothing to say that you should advocate for it as a sleep aid i think there's some data to say it may be equivocal that at least moderate doses of caffeine have any effect on your sleep

The problem with some of that data is that it's associational. So it could be that people who are drinking coffee are people who also are very thoughtful because they can afford. So yeah, healthy user bias. They're the same people who are probably drinking two cups. Then they're going to the gym. They're exercising. Sleep is fantastic. That's right. Exercise is fantastic for sleep.

The problem with some of that data is that it's associational. So it could be that people who are drinking coffee are people who also are very thoughtful because they can afford. So yeah, healthy user bias. They're the same people who are probably drinking two cups. Then they're going to the gym. They're exercising. Sleep is fantastic. That's right. Exercise is fantastic for sleep.

The problem with some of that data is that it's associational. So it could be that people who are drinking coffee are people who also are very thoughtful because they can afford. So yeah, healthy user bias. They're the same people who are probably drinking two cups. Then they're going to the gym. They're exercising. Sleep is fantastic. That's right. Exercise is fantastic for sleep.

But that's the interesting thing about the WHOOP data, though, because that is a relatively, I would guess, homogenous group of people, all of whom have got a wearable. They're tracking lots of things. And even within, because these are behaviors done by the same individual on different days.

But that's the interesting thing about the WHOOP data, though, because that is a relatively, I would guess, homogenous group of people, all of whom have got a wearable. They're tracking lots of things. And even within, because these are behaviors done by the same individual on different days.

But that's the interesting thing about the WHOOP data, though, because that is a relatively, I would guess, homogenous group of people, all of whom have got a wearable. They're tracking lots of things. And even within, because these are behaviors done by the same individual on different days.

Within subject design is what we call it. Sort of longitudinal within subject. And so the other possibility is that it's still on days when you're drinking caffeine or days when you are more fatigued.

Within subject design is what we call it. Sort of longitudinal within subject. And so the other possibility is that it's still on days when you're drinking caffeine or days when you are more fatigued.

Within subject design is what we call it. Sort of longitudinal within subject. And so the other possibility is that it's still on days when you're drinking caffeine or days when you are more fatigued.

See, this is why we need a scientist to help me pick this apart. Okay, so that's sleeping caffeine. What about sleeping alcohol?

See, this is why we need a scientist to help me pick this apart. Okay, so that's sleeping caffeine. What about sleeping alcohol?

See, this is why we need a scientist to help me pick this apart. Okay, so that's sleeping caffeine. What about sleeping alcohol?

Yeah, drink lots of it. It's fantastic for your sleep. Said like a true brain. It's right there on our passports. Alcohol is probably the most misunderstood sleep aid that there is out there. Alcohol is in a class of drugs that we call the sedatives. And sedation is not sleep. But when you have a couple of nightcaps in the evening, you mistake the former for the latter.

Yeah, drink lots of it. It's fantastic for your sleep. Said like a true brain. It's right there on our passports. Alcohol is probably the most misunderstood sleep aid that there is out there. Alcohol is in a class of drugs that we call the sedatives. And sedation is not sleep. But when you have a couple of nightcaps in the evening, you mistake the former for the latter.

Yeah, drink lots of it. It's fantastic for your sleep. Said like a true brain. It's right there on our passports. Alcohol is probably the most misunderstood sleep aid that there is out there. Alcohol is in a class of drugs that we call the sedatives. And sedation is not sleep. But when you have a couple of nightcaps in the evening, you mistake the former for the latter.

And if I were to show you the electrical signature of your sleep with alcohol versus without, you would see how different it is. It's not the same. That that alcohol will actually, it pushes you into what looks like deep, slow wave sleep. but it's kind of the faster slow brainwave activity. So it's sort of the more less nutritious of those deep slow brainwaves, but it's simply sedation.