What happens when you Sleep.

Sleep Physiology : What happens when you Sleep.

Sleep Physiology : What happens when you Sleep.

There are five stages of sleepthat the human body goes through. A complete cycle takes an average of 9-10Minutes. The sleep cycle begins from stage 1 and ends in REM (RapidEye Movement). The first sleep cycles have short REM sleeps and longperiods of deep sleep.


But later during sleep, REM periods lengthenand deep sleep time decreases.

NON REM STAGES

Stage 1.

This is the period whenyou first fall asleep and you can be awakened easily. In this stagemuscle activity slows and the eyes move slowly. People often experiencesudden muscle contractions preceded by a sensationof falling from a height.

Stage 2.

In this stage eye movementstops and the brain waves become slower and there are bursts of rapid brainwaves.

Stage 3

In this stage brain wavescalled delta waves are mixed with smaller faster waves. Deep sleep beginsin this stage.

Stage 4

In this stage the brainproduces only delta waves. There is no eye movement or muscle activity.This is the stage where children may experience bed wetting, sleepwalkingor night terrors.

In the REM period, breathing becomesshallow, irregular and rapid. Muscles in the limb are temporarily paralyzed.Blood pressure rises, heart rate increases, males develop erectionsand thebody cannot totally regulate temperature. This is the period whendreams occur.

Humans experience 3-5 intervalsof REM sleep each night.



Return From What Happens when you Sleep to About Sleep Page.

Sleep Disorders Homepage.




Melatonin and Drug Interactions is a hot topic and I set up this page to tackle this issue. Melatonin is one of the gentlest supplements,out there that you could ingest. It comes with little or no side effect and even in cases of melatonin over dose, the effect is minimal. There is the issue though …...

Melatonin for my 13 month old Baby. Melatonin for my 13 month old Baby.by AnneQuestionHi! I started my 13 month on Melatonin, suggested by my doctor.First off she is only 15 pounds...so we gave her half the dosage of 2.5mg of the liquid form.She had a typical night for herself.She woke at 3am and stayed up for a little over two ours...I was just wa...

Melatonin and Hair Loss How Melatonin can help regrow your hair or change it’s coloring.Melatonin and Hair Loss and Gain has become the center of Melatonin Research in recent times. There is now evidence to prove that melatonin directly affects hair growth and loss.Melatonin is a hormone produce in your body by the pineal gland. This hormone r...

Sleep Deprivation While Driving: A case study of Truckdrivers Sleep Deprivation While Driving: A case study of TruckdriversHave you ever taken a long trip and gotten so tired you could barely function? Loads of people go through Sleep Deprivation While Driving especially truck drivers. Specifically for truckers, do you find that you simply do not g...