Dr. Matt Walker

It's the very worst idea.

Another way would be to say, look, I go to the gym, and I spend about an hour and a half working out, but if I were to videotape you, a lot of people are doing the, I think I've coined it as your phrase, but the 11th rep,

where people do the 10 reps and then all of a sudden there's the selfie or there's the social media.

And if you look, they're only working out for about, let's say, 45 minutes and the other is wasted.

So what if the next day you came to the gym and I said, look, I'm sorry, and there's some big bouncer guys at the door, you are only allowed to work out for 40 minutes and then we're going to eject you.

And the first day you go back and you do the same thing.

And then you've only got through 30% of your workout.

So you get booted.

The next day you come back and you do a little bit more and you get booted again.

After about five or six days, you've built up such a strong desire and hunger to get your workout in.

You walk in, you put your phone on silent, you put it over in the corner and you just get to it.

And that's the same thing that we're trying to do with sleep restriction therapy.

So you have to be a little bit careful, do it under supervision, especially if you're driving or you're operating heavy machinery.

We just want to keep an eye.

It's not necessarily a big concern, but we would say, okay, Andrew, you're currently spending almost total about, you know, eight-ish or seven and a half hours in bed.

Tonight, I'm going to restrict you down to five hours a night.

And we're going to do this for the next week.

And the way that we normally do it is I don't change your wake-up time.

I change your to bedtime.

Why?