Activities during sleep

As one of the routines in our daily life, sleep has become a regular thing we do. At night, the sleep hormone melatonin produced a marker that the body needs rest to sleep. You go to bed, lie down and without knowing you have fallen asleep. The next day, when awakened you probably do not remember exactly how long you have been asleep. You probably still remember the wonderful dream last night. Have you ever wondered what actually happens when we sleep?

Quiet sleep or non-REM
During the sleep cycle we will have two kinds of sleep state is a state of quiet sleep and active sleep state. Quiet sleep is often known as NREM or non-REM (Rapid Eye Movement or No. N Fast Eye Movement).
When quiet sleep or NREM or non-REM, one's body will experience a quiet activity. Pulse, respiration and blood pressure of the body will move more calm and orderly. This is a process in which the body restores the body. Muscles, glands of the body and improved body composition. Substances that are not useful to be removed from the body. At the time of quiet sleep also merged proteins that will be used during active sleep.
In a state of quiet sleep or NREM or non-REM, a person will experience four stages. Here are the stages that occur when you start to fall asleep.
Light Sleep

The first time someone starts to fall asleep, you enter the first stage where you experience a mild sleep or shallow sleep, where the body will relax the muscles and brain waves will move irregularly. At this stage usually starts when you are drowsy and fell asleep. The first stage lasts 30 seconds to 7 minutes of your sleep first.
Actually sleep

Next, you will enter the second stage of actual sleep, in which brain waves swell, fragments of thoughts and images may appear and move in our minds but we did not realize it, even you are not aware of the circumstances around you. The second phase lasts for 20 percent of your bedtime.
More Sleep Asleep

The third stage of your sleep more soundly. At this stage, difficult to wake your body starts because it's asleep.
Sleep smeared

The fourth stage is the stage of sleep the most soundly. At this stage, the brain produces large waves, most of the blood flows to the muscles, occurs recovery and repair body functions. Growth hormone is produced and the process of growth takes place at this stage. The third and fourth phase lasted for 50 percent of the time we sleep.

If when asleep, we could not enter the third stage and fourth, then most likely we will be waking up feeling tired even depression.
Finish entering the fourth stage, you will experience the first stage, have entered the second stage onwards. This cycle will be repeated several times. In general, the repetition of this cycle lasts for 3 to 5 times. The duration of one time cycle takes about 90 to 110 minutes.

Active or REM sleep
Each quiet or NREM sleep cycle will end with active sleep or REM (Rapid Eye Movement or Rapid Eye Movement). The opposite of a quiet sleep, pulse, respiration, blood pressure and other events take place with a more active, rapid and irregular. Blood flowed to the brain and brain waves. You can see someone experiencing a period of time when she saw the bulge eyes move to the left and to the right because it is in REM sleep, the eyes move quickly to the left and to the right.
At the time of active sleep or REM is a person having a dream that most will not remember when waking from sleep. You also run into immobility that can not move your muscles. It is useful so that you do not move according your dreams so dangerous to you. Usually a person having a dream about every 90 minutes once in a sleep cycle.
Active sleep period lasts for 25 percent of the whole period of our sleep. At the time of active or REM sleep, the body restore certain functions of the brain and improve mental. At this time the mind will select, process, organize, delete things that are not important and store information that experienced on the previous day as when someone is recording a movie and will prepare the brain and the mind to accept the new information the next day. When active sleep, the brain will erase short-term memory or non-critical data and maintain long-term memory. This is what makes after sleep, the mind feels fresh because more available memory of the brain to be used again.
In addition, during sleep, the body produces T cells that will fight against pathogens or germs. And when he did, the body also produces the hormone leptin to regulate appetite.
For your body to feel good benefits of sleep, a person must experience all the sleep process and within a reasonable time. If we lack sleep, it will be difficult to concentrate, memory loss, and vocabulary, decreased ability to think analytically, and lose creativity. Even the lack of sleep can increase anxiety and depression. Then, work so that you get enough sleep every day and feel the benefits.