Dr. Matthew Walker

Now on any one of those grounds, but especially as a collective, sleep should have been strongly selected against in the course of evolution.

Now on any one of those grounds, but especially as a collective, sleep should have been strongly selected against in the course of evolution.

Now on any one of those grounds, but especially as a collective, sleep should have been strongly selected against in the course of evolution.

They have to keep coming up for air. Now you could have designed a system where they just didn't need sleep so that they would never have to worry about surfacing. Sleep was so incredibly necessary for those aquatic mammals. They had to figure out how to sleep with one half of their brain.

They have to keep coming up for air. Now you could have designed a system where they just didn't need sleep so that they would never have to worry about surfacing. Sleep was so incredibly necessary for those aquatic mammals. They had to figure out how to sleep with one half of their brain.

They have to keep coming up for air. Now you could have designed a system where they just didn't need sleep so that they would never have to worry about surfacing. Sleep was so incredibly necessary for those aquatic mammals. They had to figure out how to sleep with one half of their brain.

Because they couldn't get around this non-negotiable thing called sleep. Yeah. And so I think for me, what that really tells us is that If sleep doesn't serve an absolutely vital set of functions, it was probably the biggest mistake the evolutionary process ever made. And now we realize it didn't make a spectacular blunder. It is- We need a cleanup. It's cleanup.

Because they couldn't get around this non-negotiable thing called sleep. Yeah. And so I think for me, what that really tells us is that If sleep doesn't serve an absolutely vital set of functions, it was probably the biggest mistake the evolutionary process ever made. And now we realize it didn't make a spectacular blunder. It is- We need a cleanup. It's cleanup.

Because they couldn't get around this non-negotiable thing called sleep. Yeah. And so I think for me, what that really tells us is that If sleep doesn't serve an absolutely vital set of functions, it was probably the biggest mistake the evolutionary process ever made. And now we realize it didn't make a spectacular blunder. It is- We need a cleanup. It's cleanup.

Sleep is mother nature's best effort yet at immortality based on everything that I've seen.

Sleep is mother nature's best effort yet at immortality based on everything that I've seen.

Sleep is mother nature's best effort yet at immortality based on everything that I've seen.

I mean, if you look at the data, there has been a pernicious erosion of sleep time over the past 100 years. Now, if you look at it over the past 10 years, that creep has maybe not been so demonstrable. But really, think about it. We evolved over millions and millions of years for our evolution.

I mean, if you look at the data, there has been a pernicious erosion of sleep time over the past 100 years. Now, if you look at it over the past 10 years, that creep has maybe not been so demonstrable. But really, think about it. We evolved over millions and millions of years for our evolution.

I mean, if you look at the data, there has been a pernicious erosion of sleep time over the past 100 years. Now, if you look at it over the past 10 years, that creep has maybe not been so demonstrable. But really, think about it. We evolved over millions and millions of years for our evolution.

And it's taken mother nature millions of years to put this necessity of a seven to nine hour sleep need in place. And then within the space of a hundred years, we've gone from something that seems to be based on the data around about 8.4 hours of sleep a night that we used to be getting a hundred years ago.

And it's taken mother nature millions of years to put this necessity of a seven to nine hour sleep need in place. And then within the space of a hundred years, we've gone from something that seems to be based on the data around about 8.4 hours of sleep a night that we used to be getting a hundred years ago.

And it's taken mother nature millions of years to put this necessity of a seven to nine hour sleep need in place. And then within the space of a hundred years, we've gone from something that seems to be based on the data around about 8.4 hours of sleep a night that we used to be getting a hundred years ago.

Now, if you look at the data on average, Americans are sleeping about six hours and 40 minutes. Now don't forget, That's the average. That means that there's a good proportion of people who sit to the left side of that distribution, who are getting even less than that. America is not the worst culprit, by the way, Japan, we're all at each other's throats and not thinking clearly.

Now, if you look at the data on average, Americans are sleeping about six hours and 40 minutes. Now don't forget, That's the average. That means that there's a good proportion of people who sit to the left side of that distribution, who are getting even less than that. America is not the worst culprit, by the way, Japan, we're all at each other's throats and not thinking clearly.