Insomnia in our time - quite a frequent problem. Insomnia is called sleep disturbance, which is characterized by insufficient duration or unsatisfactory quality of sleep over a long period of time. It negatively affects health, mood and labor activity. In this case, it can develop into a chronic, and chronic insomnia can lead to diseases of the cardiovascular, nervous systems, etc. Sleep - a reflection of human health, one of the components of the quality of our lives. It affects our health and our mood no less than the period of wakefulness. A good sleep is determined not by the number of hours you sleep, but by the quality of sleep during these hours and by the state of health after sleep.