Dr. Matthew Walker

And people have said, well, that's proof that sleep can actually kill you. If you look at the data, at least one of two things is happening in those studies. When you get sick, what is the first thing that you typically want to do? Sleep. Exactly.

And people have said, well, that's proof that sleep can actually kill you. If you look at the data, at least one of two things is happening in those studies. When you get sick, what is the first thing that you typically want to do? Sleep. Exactly.

And it turns out that the reason is that your immune system has a very adaptive network that when you get sick, it brute forces a set of chemicals to induce you into more sleep because it knows that the Swiss army knife of health, the best thing that it has to combat disease and sickness is this thing called sleep. So it drives you to sleep more.

And it turns out that the reason is that your immune system has a very adaptive network that when you get sick, it brute forces a set of chemicals to induce you into more sleep because it knows that the Swiss army knife of health, the best thing that it has to combat disease and sickness is this thing called sleep. So it drives you to sleep more.

And it turns out that the reason is that your immune system has a very adaptive network that when you get sick, it brute forces a set of chemicals to induce you into more sleep because it knows that the Swiss army knife of health, the best thing that it has to combat disease and sickness is this thing called sleep. So it drives you to sleep more.

And so what was happening in those studies is that whatever the disease was, the sickest people were sleeping more.

And so what was happening in those studies is that whatever the disease was, the sickest people were sleeping more.

And so what was happening in those studies is that whatever the disease was, the sickest people were sleeping more.

It's like an unhealthy user bias.

It's like an unhealthy user bias.

It's like an unhealthy user bias.

And it looks like artificially more sleep is killing you.

And it looks like artificially more sleep is killing you.

And it looks like artificially more sleep is killing you.

It's just that the people that were sleeping nine hours or more per night, there was something underlying that was causing them to.

It's just that the people that were sleeping nine hours or more per night, there was something underlying that was causing them to.

It's just that the people that were sleeping nine hours or more per night, there was something underlying that was causing them to.

It was too powerful for sleep to overcome despite sleep trying. The other reason is because of sleep quality versus quantity. Typically, what we find is that people who have really bad sleep quality stay in bed for far longer. And sleep quality also predicts all-cause mortality. So as a consequence, it looks like people, when they say, what time did you get into bed? What time did you wake up?

It was too powerful for sleep to overcome despite sleep trying. The other reason is because of sleep quality versus quantity. Typically, what we find is that people who have really bad sleep quality stay in bed for far longer. And sleep quality also predicts all-cause mortality. So as a consequence, it looks like people, when they say, what time did you get into bed? What time did you wake up?

It was too powerful for sleep to overcome despite sleep trying. The other reason is because of sleep quality versus quantity. Typically, what we find is that people who have really bad sleep quality stay in bed for far longer. And sleep quality also predicts all-cause mortality. So as a consequence, it looks like people, when they say, what time did you get into bed? What time did you wake up?