Various studies have shown that napping for a few moments can make the brain go back fresh. Positive impact can be felt include the concentration increases, so it can run a multitasking or do lots of things at the same time.
This theory applies also to nap unintentional, such as falling asleep at his desk in the middle of the bustle. Although only slept for a very short time, someone can still wake up with a fresher state of mind.
Prof. Alon Avidan, neurologist and sleep disorders from the University of California says that the human need to nap cannot be separated from the biological clock. At 3-4 pm, the rhythm of the body tends to decline so take a break to get back to the original rhythm.
