U start dreaming..... Enter rem state
Snoring typically occurs during the deeper stages of sleep, known as REM (rapid eye movement) sleep.
Sleep spindles typically appear during stage 2 of non-REM sleep. They are brief bursts of brain activity that help in the consolidation of memories and are associated with the transition from light to deeper sleep.
First you are drowsy, then you go into a light sleep where it is easy to wake up, I think this lasts about 10 minutes. Next you begin a proper, deeper sleep, lastly you enter R.E.M. stage, in which you dream. R.E.M. stands for Rapid Eye Movement, which causes you to dream. Pardon me for any errors. U.V. light will help you wake up.
The cells are alive and metabolically active.
It happens in the 4th stage
There are five stages of sleep. Stage 1 being the one you first enter, then followed by stage 2, 3 and 4. As you descend into deeper sleep your brain frequency slows down. In stage 4 can it be slower than one cycle per second (delta sleep). After some time spent in stage 4, about 25 minutes, you return to stage 3 and 2, then straight into REM sleep. About 90 minutes has passed now since you started sleeping. 5-10 minutes is spent in this stage before you go all the way down to stage 4 again (also called non-REM sleep). When approximately 90 minutes have again passed, another REM-period start. This time the REM sleep lasts longer. And as time progresses less time in non-REM sleep is needed and more time is spent in REM sleep. After 4-5 hours you don't go lower than stage 2. Vivid dreaming takes place in REM sleep, so the more you sleep, the more time is spent in REM.
The deepest stage of sleep is REM or Rapid Eye Movement.
REM or Rapid Eye Movement. You sleep in cycles, moving from lighter to deeper sleep and back. A sleep cycle lasts about 90 minutes, with REM occurring toward the end of each cycle. The REM stage gets a little longer in each cycle; you may only dream for a few seconds in the first sleep cycle, and for a large percentage of the last cycle of the night.
There is alpha or stage one sleep, theta or stage two sleep, delta or statge 3 sleep, and alpha with REM (stage 4 sleep).
There are four stages of sleep: 1) Stage 1 is characterized by theta waves, 2) Stage 2 by sleep spindles and K-complexes, 3) Stage 3 by delta waves, and 4) Stage 4 by predominantly delta waves. As we progress through the stages, brain activity slows down, with deeper stages associated with slower wave patterns.
You return to stage 3, then stage 2 (delta sleep) before going to REM sleep (stage 5).
You return to stage 3, then stage 2 (delta sleep) before going to REM sleep (stage 5).