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edit]. The stages of sleep were first described in 1937 by Alfred Lee Loomis and his coworkers, who ...

Stages of Sleep - Sleepdex


Usually sleepers pass through five stages: 1, 2, 3, 4 and REM (rapid eye movement) sleep. These stages progress cyclically from 1 through REM then begin ...

Stages of Sleep: REM and Non-REM Sleep Cycles - WebMD


Oct 22, 2014 ... WebMD explains the stages of sleep -- REM and non-REM -- and how age affects these cycles.

Stage 4 is sometimes referred to as delta sleep because of the slow brain waves known as delta waves that occur during this time. Stage 4 is a deep sleep that lasts for approximately 30 minutes. Sleep begins in stage 1 and progresses into stages 2, 3 and 4. After stag... More »
By Kendra Cherry, About.com Guide

Stages of Sleep | Psych Central


Most dreaming occurs during Stage Five, known as REM. REM sleep is characterized by eye movement, increased respiration rate and increased brain activity.

Five Stages Of Sleep ... Sleep Cycles Explained


Questions about the five stages of sleep? Learn what happens in your brain during each of the 5 stages of sleep, and why they are so important...

What Happens When You Sleep? - National Sleep Foundation


If sleep is cut short, the body doesn't have time to complete all of the phases needed for muscle repair, memory consolidation and release of hormones ...

The Stages of Sleep - World of Lucid Dreaming


We used to identify five stages of sleep (as above) but recently Stages 3 and 4 have been grouped together for their similarities. Let's take a closer look at those  ...

Sleep - Types and Stages of Sleep - Non-REM (NREM) Sleep


Non-REM sleep, which is perhaps best defined negatively as any sleep not recognizable as REM sleep, consists of three separate stages (stage1, stage 2 and ...

Popular Q&A
Q: What are the five stages of sleep?
A: The 1st stage is characterized by a drowsy feeling rather than 'sleep' In the 2nd Read More »
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Q: What are the five stages of sleep.
A: They're called Stage 1 through 4 and REM. 1) light sleep 2) eye mvmt stops 3) delta Read More »
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Q: What are the five stages of sleep?
A: Stage 1 is where your body is preparing itself from being awake to going into a light sleep. The eyes move very slowly. Your muscle activity also starts to dimi... Read More »
Source: answers.yahoo.com
Q: What are the five stages of sleep and why do you sleep?
A: The five stages of sleep are these: Stage 1, Stage 2, Stage 3 and 4 are combined into one stage and are called slow wave sleep, and REM sleep. The truth is, no ... Read More »
Source: wiki.answers.com
Q: What are the Five Stages of Sleep
A: Stage 1: In the first stage, you are lightly sleeping, drifting in and out of sleep and easily being awakened. The eyes move slowly and your muscles show signs ... Read More »
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