American scientists from the University of California found out which period of sleep is most beneficial to the body. According to researchers, the last phase of sleep, known as a "short sleep", allows a person to cope with stress.

Specialists conducted a practical experiment to confirm their own theory. The volunteers were immersed in a short sleep, in which people see dreams, and kept in it as long as possible. As a result, it turned out that the respondents were slowing down their brain activity associated with fear.

People who spent more time in a short sleep felt more confident, it was easier for them to cope with post-traumatic emotional disorder and overcome the feeling of tension.

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