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Asmajor as drinking water, having oxygen, and eating are sleep is just as vital.Sleep is a state of an inactive body during a series of hours, while the mindis still active. During sleep, we usually pass through four stages of sleep.The NREM (non-rapid eye movement) stages have been divided into three sub stages,then the REM (rapid eye movement).

The first stage of NREM is the lighteststage of sleep, in which people can be easily awoken. The second stage of NREMis when sleep is absolutely acquired. This is the stage is where forty to fiftypercent of sleep is consumed.  The thirdstage of NREM is acknowledged as the deep sleep stage. It’s commonly referredto as the Delta stage of sleep.

The final stage of a sleep cycle is REM. Sleep disordersand dreams can take place during this stage. This stage is also recognized byan increase of the heart and respiration rates. When, the necessary amount of sleepis obtained these four stages of sleep are cycled.

Each stage can last fromninety to one hundred and twenty minutes. The body needs sleep in order toproperly function.Sleeprevitalizes what is lost in the body while we are awake.

Sleep provides anopportunity for the body to restore its chemical balance. Sleep helps toimprove memory, promote health, and prevent disease. When our immune systemsencounter foreign invaders, (viruses and bacteria) inflammation is a defensemechanism in order to repair tissues. However, Inflammation is linked to heartdisease, stroke, diabetes, arthritis, and premature aging. Research indicatesthat people who get less sleep six or fewer hours a night have higher bloodlevels of inflammatory proteins than those who get more. The C-reactiveprotein, which is associated with heart attack risk, was higher in people whogot six or fewer hours of sleep a night.

“Sleep can definitely reducelevels of stress, and with that people can have better control of their bloodpressure,” Dr. Jean says. “It’s also believed that sleep effectscholesterol levels, which plays a significant role in heart disease. Getting agood night’s sleep won’t grant you immunity from disease. But, study afterstudy has found a link between insufficient sleep and some serious healthproblems, such as heart disease, heart attacks, diabetes, and obesity. The mostimportant role of sleep is for learning and memory. Synapses are where memoriesare stored.

More synapses are formed when a person receives an appropriateamount of sleep versus a person that is sleep deprived.Sleepdeprivation is a condition characterized by not gaining enough sleep. Sleepdeprivation leaves the brain exhausted so it cannot perform its tasks aswell.  There are many consequencesfollowed by not getting enough sleep. Sleep deprivation is linked to many healthand psychological problems. Psychological problems include impulsive behavior,depression, paranoia and, suicidal thoughts.

Long term health problems of sleepdeprivation include: lack of concentration, unstable moods, weakened immunesystem, diabetes and low sex drive.  Getting the proper amount of sleep can help toimprove memory and performance. Sleep helps us to retain a better concentrationlevel, while in class to learn and have a better attention span. Sleep helps toincrease an overall emotional well-being. We should deeply appreciate the functionof sleep in our lives.

Many of us acknowledge at some degree that sleep makesus feel better. We feel more attentive, more energized, happier, and betterable to function following a necessary amount night of sleep.

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