There are times that you can not get yourself to sleep because you worried or bothered by certain problems. However, there also when you can not get yourself to sleep and you do not know why. However, there are times you feel very sleepy and your eyes are really tired and sick and, yet, you just can not get yourself to sleep. You keep throwing up in bed, ruffled pillow you sleep, but it is difficult to understand and you want to know what really happened to you. And just when the sun is shining and you should wake up to start your day, suddenly, you fall asleep. That is the inability to sleep, or sleep pattern disturbances, such as wake up after a few hours of sleep.
Many people have the wrong idea that our mind and body in a state of passive while we sleep. Conversely, it is a state of consciousness or dynamic activities that give our body’s time to rest and build strength while the brain continues to work. Sleep has five stages. During the first stage, light sleep and can be easily awakened. At this stage, the eyes move very slowly and muscle activity. Oftentimes, when a person is awakened, sudden muscle contractions occur as if you are falling off. In phase two, stop the eye movements and brain waves change slowly with the occasional quick burst wave is known as “sleep spindles”. At stage 3, delta waves begin to appear. This is a very slow brain waves interspersed with smaller, faster waves. During stage four, only the delta waves are produced by the brain.
You will have a difficult time waking up is someone who is already at stage 3 or 4 or in a deep sleep where there is no more eye movement or muscle activity. People who wake up during disoriented while sleeping soundly. It is also during this phase of sleep that children experience bedwetting, night terrors, or sleepwalking. REM sleep is the last stage in which breathing becomes more rapid, shallow and irregular. Eyes jerk rapidly in different directions with a paralyzed limb muscles for a short time. During this stage, it increased heart rate, blood pressure rises, and penile erection occurs among humans. Dreams experienced during REM sleep stages. Repeat this step in the cycle. Complete sleep cycle takes about 90-110 minutes on average. The first sleep cycles each night REM sleep is characterized by short periods and long periods of deep sleep. But as the night passed, REM sleep periods become longer while the period of deep sleep get shorter. In the morning, people spend their sleep time in stage 1, 2, and REM sleep stages.
According to research, we spend 50% of our sleep time in stage 2 sleep, about 20% in REM sleep, and 30% in other sleep stages. In comparison, infants spent half of their sleep time in REM sleep. Sleep and waking are influenced by different neurotransmitter signals in the brain. When food and drugs change the balance of these signals, we begin to feel wary or later. This also affects the way we sleep. Coffee and other caffeinated beverages and weight loss diet pills can cause insomnia by stimulating certain parts of the brain. Many people suffer from insomnia try to encourage sleep by taking over the counter sleeping pills. Others resort to alcohol which only produce light sleep, but eliminating them from REM and deeper, more restorative stages of sleep.
