Dr. Matthew Walker

And their network includes over a billion professionals.

About 130 million of them are decision makers.

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And LinkedIn ads also drive the highest B2B return on ad spend across all ad networks in my experience.

If you want to give them a try, head over to linkedin.com slash diary.

And when you spend $250 on your first LinkedIn ads campaign, you'll get an extra $250 credit from me for the next one.

That's linkedin.com slash diary.

Terms and conditions apply.

We were talking about regularity, timing and all these things and quality and quantity.

But one of the things I learned from your work is that that last hour is potentially the most important hour of me being in bed.

And I say this in part because my girlfriend, she would wake, she would have about six hours, six and a half hours sleep.

She sleeps very, very well.

Perfect sleeper.

But she'd always get up really, really, really early.

And...

In part, that was because of the guilt that I talked about.

But I had a conversation with her about the guilt.

And I said, just stay in bed as long as you need to stay in bed.

Like, just have that extra eighth hour.

And in part, that's because I learned that the further we go in sleep, the more REM we're getting.