Sleep and its phases, 5 stages of sleep and the miracle of intelligent alarm clock tells you when to wake up, to feel rested.
"The dream - it is a miracle of Mother Nature, delicious dishes of the feast on the earth ...".
W. Shakespeare.
Good sleep - is the key to health. Healthy physical, emotional and psychological - the dream is one of the keys to human health. A person deprived of sleep becomes irritable, distracted, unable to carry out their everyday work.
Experts call the average rate of sleep a day for a man - 7-8 hours. But in our time of rapid norm for everyone. To sleep a couple of hours, we sometimes feel quite sleep. Sometimes it happens that a man sleeps for 10 hours and at 11, and not feeling rested. Each for himself is his own personal rhythm of sleep.
To understand the causes of a rash will help us not such a thing as sleep phase
Scientists who study sleep, there are five different phases. All phases have their signs and their duration. The main ones are two phases: slow and fast sleep.
The phase of REM sleep while falling asleep longer REM sleep and before awakening - increasing the duration of REM sleep.
The first four phases are summarized and called slow sleep (slow-wave sleep, orthodox sleep).
The first stage of sleep - the so-called period of dormancy. Slumber a person not suffering from disorders of sleep, lasting from one to ten minutes.
Man is easy to wake up in this state, and it is possible that he would deny his dream. At this stage, sometimes there are involuntary muscle contractions (usually during this there is the image of falling, tripping, etc.).
The second stage - sleep spindles (duration - 20-30 minutes). At this stage, the body starts to calm down, breathing becomes deeper, the temperature is slightly reduced.
For the first two phases are characteristic of so-called dream thought. Fragments of pictures of the previous day, the thought of pressing issues, etc. Wake up the sleeping still easy. Increased sensitivity to sounds. Almost all respond to his name.
The third stage is finally pleases us the beginning of a deep sleep. The third and the fourth step is often combined into one. There comes the deepest sleep. During this period of sleep a person is difficult to awaken.
The fifth stage - REM sleep, REM sleep, also called REM phase (rapid eye movement) or, in the English version, REM-phase (rapid eyes movements - rapid eye movements). During this period of sleep, if you look at the sleeping, we will see a rapid movement of the eyeballs.
During REM sleep muscle man just relax, it is very difficult to wake up, while the activity of the brain increases.
French neurologist named this stage, paradoxically, "waking facing inward." It was in this phase we dream dreams.
In adults, the percentage among all sleep stages is: a nap is about 12, 1% of sleep, the stage of carotid spindles - 38, 1%, the third and fourth (delta sleep surface and deeper) - 14, 2% and 12, 1% respectively, and finally, REM - 23, 5%.
Now that you know some of the stages is our sleep, you can answer the question: "Why do I feel tired, slept more than 8 hours? "
The phases of sleep a healthy person during sleep are repeated cyclically several times.
Depending on what phase you woke Service, you will feel a relaxed or not.
For a good night's sleep you need to wake up during the fifth stage, that is to take a full sleep cycle.
It will help you to wake up in the proper stage of the special alarm clock, smart alarm clock. Alarm due to sensor (located in the bracelet) registers changes and based on their determines your stage of sleep.
Specify a smart alarm clock
the range of time in which you need to wake up (for example, from 7-30 to 8-15), and it wakes you at the end of REM sleep.
Sleep is no less important than food, water and environment, so try not to expose your body to stress.
A lack of sleep - is stressful for you, and quite frankly, and others.
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