A modern citizen needs to maintain sleep hygiene, otherwise, he is at risk of severe insomnia. But from a simple lack of sleep can save a short day's sleep. HOW TO SLEEP PROPERLY? Rules of sleep hygiene are formulated quite clearly: they can be found on many sites, such as the site of World Sleep Day. "The basic rule is in compliance with the regime. It is desirable that you lie down at the same time, which would be different on working days and weekends. Relaxation techniques are also important. This means that two or three hours before bedtime you need to reduce the light in the room, stop physical activity (although they are useful during the day). You should not eat too much at night, or go to bed with an acute sense of hunger," says Alexander Melnikov, a doubter and head of the Department of Doubtology at the Federal Research and Clinical Center for Otorhinolaryngology. It is also important to observe the so-called bedroom hygiene. The room should have a slightly cool temperature