The baby seemed to be in a deep sleep.

He fell into a deep sleep.

He fell into a deep slumber.

I usually sleep soundly.

Tom awoke from a deep sleep.

The baby was in a deep sleep in his mother's arms.

This stage occupies 45 55 of total sleep in adults.

The REM sleep, rapid eye movement, dream state, is in light green and light is gray, light sleep and deep sleep, the best restorative sleep, is that dark green.

And this tells you, of course, how much you had in REM sleep, in deep sleep, and all this sort of thing.

This is a beautiful, new device that gives you detailed sleep tracking data, not just whether you're asleep or awake, but also your phase of sleep deep sleep, light sleep, REM sleep.

But what is exactly that stuff that we lose under anesthesia, or when we are in deep, dreamless sleep?

When the sun was going down, a deep sleep fell on Abram. Now terror and great darkness fell on him.

And we could take a very simple view and say, well, it is that which we lose when we fall into deep sleep without dreams, or when we go under anesthesia, and it is what we regain when we recover from sleep or from anesthesia.

Monti, Jaime M., S. R. Pandi Perumal, Christopher M. Sinton (2008).

Older people tend to sleep less overall but sleep in REM for about the same absolute time, and therefore spend a greater proportion of sleep in REM.

I heard his voice in my sleep.

Deep sky objects Two well known deep sky objects can be found in Vulpecula.

Because work, like sleep, happens in phases.

It was deep in my imagination.

Are you sleepy?

I'm a light sleeper.

I'm not sleepy.

I'm sleepy.

I feel sleepy.

I'm a heavy sleeper.

References

It can be caused by another disorder, by changes in the sleep environment, by the timing of sleep, severe depression, or by stress.

The kind of relationships when deep speaks to deep.

There have been multiple studies conducted under placebo controlled conditions.

But there was a deep paradox in all of this.

He seemed to be in a very deep thought.

Geography Some island countries are more affected than other countries by climate change, which produces problems such as reduced land use, water scarcity and sometimes even resettlement issues.

And sleep disorders.

Are you sleepy?

Aren't you sleepy?

Aren't you sleepy?

Aren't you sleepy?

I'm still sleepy.

I fought against sleep.

I was sleepy.

I'm not asleep, meh.

You're sleepy.

You're sleepy.

Tom is sleepy.

We're sleepy.