The project, which involved a group of experts led by Professor of psychology Richard Wiseman, ended with the conclusion that short sleep in the daytime is extremely beneficial to the human body. In particular, daytime sleepiness contributes to a reduction in depressive markers, improves emotional tone, and makes happier, the researchers found.

The researchers analyzed the data of scientific papers that have studied the effect of daytime sleep. They found a curious feature: it was a short sleep (30 minutes) had a healing effect on the emotional state of people.

According to experts, 66% of the participants spoke about growing up the sense of mental satisfaction after they started to give up his NAP at 30 minutes or less. "It could not boast 56% of those who were dozing in the afternoon for longer than 30 minutes, and 60% of those who completely ignored sleep during the lunch break," said the authors of the project.

Psychology Professor Richard Wiseman is convinced that in order to become happier, you just have to allow yourself a little daydream. He noted that daytime sleep, lasting up to 30 minutes, makes a person more focused, productive, and creative — all of this contributes to confidence, opens up new prospects for personal development or career and invariably increases the degree of contentment with his existence.

At the same time a long sleep is associated with some health risks, scientists have warned.