Dr. Matt Walker

And maybe you're doing that by two hours.

Maybe you're normally in bed by 10 p.m.

during the week.

But now at the weekends, you're going to sleep maybe 12, 12.30, and you're waking up two, three hours later on a Saturday and Sunday.

And then the problem with that, parenthetically, is on Sunday evening, you've now got to go back to work the next day.

So you have to push yourself back to 10.30.

or 10 o'clock, whereas you were going to bed, let's say at 1 a.m.

on Friday and Saturday night, that's a three-hour time shift.

And people are doing that very frequently.

That's the equivalent of you and I flying back and forth from Los Angeles to New York every single weekend in terms of our circadian rhythm.

And it's brutal on it.

But this is separate from

this notion of your timing, the final part of the QQRT.

And by pushing your timing a little bit later into the morning when you wake up, you will experience more REM sleep.

And as I said, when people sleep later, they go to bed later at night and they wake up much later in the morning at the weekend.

I strongly suspect that if they paid attention, they would say, at weekends, I always dream more.

I always can remember my dreams and they're more intense.

It's not because there's something magical about how your memory recollection of dreams operates on Saturdays and Sundays.

It's because you've slept in later.

You've gone into that REM sleep rich preferential phase in the morning and therefore you've increased your REM sleep.