A recent study found that the electric light from laptops, tablets, smartphones and other gadgets prevents a person sleep at night. The researchers found that artificial lighting knocks natural human rhythm. However, the light from the devices has an effect on chemical compounds in the brain and awakens in man the desire to use stimulants for example caffeine.
According to lead author of the study Charles Keiser from Medical school at Harvard, many factors can cause poor sleep: the need to get up early to school or work, the consumption of caffeine in the evening hours, etc. Until now, no one suspected that the electric light affects the circadian rhythms of the body more than any medicine. Artificial lighting hampered the development of melatonin - the hormone of the pineal gland, which regulates circadian rhythms. This hormone is restored circadian rhythm, the process of falling asleep becomes easier, and daytime sleepiness disappears. Experts believe that artificial light will activate those neurons that cause a person to feel constantly anxious feeling.
Today, many people continue to use laptops, mobile phones, or watching TV, not taking into account the fact that the night behind the window and the body needs rest and sleep. One American study found that 30 percent of working men and 44 percent of the people who work the night shift, sleep no more than six hours per day. Other statistics indicate that 50 years ago, less than three percent of the people slept the same amount of time as today. In school age children sleeping on the 1.2 hours less than children of the same age a hundred years ago. According to experts, the development of modern technologies has led to the fact that the person attended from twenty-four hour day, accustomed to his body and forces him to go to bed much later. People are forced to consume large quantities of caffeine in order to combat sleepiness. Of course, each person has individual duration of sleep. It should be 8 hours, but in reality the sleep duration is equal to 7-7 .5 hours.