Tom awoke from a deep sleep.

He fell into a deep sleep.

He fell into a deep slumber.

I usually sleep soundly.

The baby seemed to be in a deep sleep.

This stage occupies 45 55 of total sleep in adults.

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

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

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.

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.

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

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

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.

We had a sound sleep.

I'm feeling a bit sleepy.

It has a deep melancholy ring.

I'm feeling a bit sleepy.

He exhaled a deep breath in discouragement.

And finally, there's a profound social impact.

Now, this is a profound biological effect.

Additionally, it has a profound effect on creative problem solving and deep information processing.

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.

There is now a kind of sleep deprivation one upmanship.

Sleep is the best medicine for a cold.

Tom had a heart attack and died in his sleep.

I slept much more lightly than usual.

I'm going to take you on a deep dive.

But there was a deep paradox in all of this.

He seemed to be in a very deep thought.

Are you sleepy?

I'm a light sleeper.

I'm not sleepy.

I'm sleepy.

I feel sleepy.

I'm a heavy sleeper.

References

The kind of relationships when deep speaks to deep.

Despite the importance of sleep, its purpose is a mystery.

Tom fell asleep while he was driving and caused an accident.

Tom fell asleep while driving and caused an accident.

Tom fell asleep at the wheel and caused an accident.

There have been multiple studies conducted under placebo controlled conditions.

But it makes a whole lot of sense at some deep level.

Poincaré as a philosopher was interested in the deeper meaning .

And sleep disorders.