There have been multiple studies conducted under placebo controlled conditions.

Skeptics of the phenomenon suggest that it is not a state of sleep, but of brief wakefulness.

Ontogenesis According to the ontogenetic hypothesis of REM sleep, the activity occurring during neonatal REM sleep (or active sleep) seems to be particularly important to the developing organism.

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.

by A. P. Maudsley, 1928, repr.

Tom suffers from sleep apnea.

Sleep deprivation is extreme.

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

It's removed some of my paralysis.

If and when the supply is depleted, paralysis occurs.

And we had sleep apnea at night.

OK. Now let's move from sleep to diseases.

Having less sleep than this is common among humans, even though sleep deprivation can have negative health effects.

Continued international paralysis is indefensible.

The first diagnosis was cerebral palsy.

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.

Gulnar Alfidatli, a 23 year old actress at ƏSA, has cerebral palsy.

If all four limbs are affected by paralysis, tetraplegia or quadriplegia is the correct term.

Are you sleepy?

I'm a light sleeper.

I'm not sleepy.

I'm sleepy.

I feel sleepy.

I'm a heavy sleeper.

References

And the next thing is paralysis.

A night terror, sleep terror or pavor nocturnus is a parasomnia or sleep disorder, causing feelings of terror or dread, and typically occurs during the first hours of stage 3 4 non rapid eye movement (NREM) sleep.

There is now a kind of sleep deprivation one upmanship.

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.

All of the troops were able to hear the call of the shofar from their position because of its distinct sound.

In children under five years of age, paralysis of one leg is most common in adults, extensive paralysis of the chest and abdomen also affecting all four limbs quadriplegia is more likely.

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.

I'm getting sleepy.