Probably everyone has had at least once in his life a heavy night of sleep where he could not sleep.
A storm or a too late and very consistent dinner are just two examples which can lead to sleep issues.
From a medical viewpoint, insomnia is the difficulty of falling asleep when it requires over 45 minutes to fall asleep.
Insomnia is a sleep disorder that manifests by reducing the duration and depth. May be caused by debilitating abdominal disasters, neuralgia, hypertension, neurosis, psychosis, encephalitis, intoxication, diabetes, hyperthyroidism, psychological crisis etc..
– transient insomnia: it only lasts for several nights and is brought on by an unpleasant event that produces dissatisfaction or frustration.
Complete persistent insomnia is characterized by a permanent fatigue; the individual almost can not fall asleep, and in the morning he’s in a state of melancholy. It can be avoided by following a sensible work and rest regime and by administering painkillers or sleeping pills.
Sleep is crucial to life, exactly like water and food. That’s why, in the past 25 years, scientists have given the phenomenon a particular focus, which has attracted to the discovery of many interesting things.
We are in need of sleep to develop, restore and work to optimum parameters. Memory and vigilance are contingent on the level of sleep, as well the ability to concentrate and learn, therefore, while sleeping our brain is re-energizing, cells are regenerate.
Also lack of sleep can lead to an increase in weight by about 900 grams per week because we are disturbed by hormonal balance and we will feel the need to eat more often.
REM sleep in which we have dreams, happens in gust, about 90 minutes after falling asleep, usually summing up about two hours per night. Some scientists think that dreams help us to set memories in memory in the long run. Others, on the contrary, consider that dreams help us remove some memories that are over that overlap and which otherwise would block brain activity.
REM sleep can play an essential role in brain development.
Also, fatigue caused by poor sleep causes 1 in 6 fatal road accidents.