Before your body goes to full sleep mode,your body shakes.(Sometimes you sleep through it)It gives you the illusion that you fell. Scientists are not exactly sure why,but that is where we get the expression falling asleep.
The stages of sleep are: NREM 1, NREM 2, NREM 3, and REM sleep.
The deepest stage of sleep is NREM 3, it is also called slow wave sleep since it has delta waves on an EEG.
Dreams occur in REM sleep and is one of the shallowest stages of sleep.
3/13/2012 jhh: REM sleep is NOT deep sleep. In fact, it is the lightest stage of sleep. In order from awake to deep sleep: AWAKE, REM, LIGHT, DEEP. Deep sleep and REM sleep are the most important stages though. Light sleep doesn't do much for you. Deep replenishes your body, while REM replenishes your mind. Older answer (not accurate): Yes. It is the deeper form of sleep that we experience during our sleep cycle, rem sleep is where dreaming occurs But not the deepest sleep, which would be delta. That's where, unless your a mother and hear your baby cry, you are oblivious to your environment.
If you poke it, then yes.
Your foot...
Paradoxical excitement or paradoxical sleep is a stage of sleep (during REM) in which the brain and body systems are active while the body is physically at rest. This excited stage while at rest is why it's a "paradox."
Contrary to popular belief, sleepwalking occurs in the deepest stages of sleep, called delta-wave sleep or stage 4 sleep. REM sleep, by contrast, is rapid eye movement sleep, during which the body is in a near-paralysis state.
REM sleep is important because this it the stage of sleep helps our brains develop.
Stage 1
I'm pretty sure it's adrenaline
U start dreaming..... Enter rem state
sleeping rewires your brain. However, the sleep that is most beneficial to feel refreshed and not fatigued is stage 4 and REM sleep. Your brain needs to recover from working all day.
deepest water anywhere
Stage 1 is light sleep where you drift in and out of sleep and can be awakened easily. In this stage, the eyes move slowly and muscle activity slows. During this stage, many people experience sudden muscle contractions preceded by a sensation of falling.In stage 2, eye movement stops and brain waves become slower with only an occasional burst of rapid brain waves. When a person enters stage 3, extremely slow brain waves called delta waves are interspersed with smaller, faster waves. In stage 4, the brain produces delta waves almost exclusively. Stages 3 and 4 are referred to as deep sleep, and it is very difficult to wake someone from them. In deep sleep, there is no eye movement or muscle activity. This is when some children experience bedwetting, sleepwalking or night terrors.In the REM period, breathing becomes more rapid, irregular and shallow, eyes jerk rapidly and limb muscles are temporarily paralyzed. Brain waves during this stage increase to levels experienced when a person is awake.