English word “insomnia” comes from latin name Somnus — the ancient god of sleep. Somnus allegedly lived in a cave, whose mansion did not see the rising, nor the setting sun, nor did it see the lightsome noon. At the same time, in a study conducted by the London School of Economics in 2009, most people with higher IQs turned out to be night owls. The study found a mathematical probability that people doing better at work are generally more likely to pull all-nighters due to their hyperactive mind that doesn’t allow them to fall asleep. It is not clear if Somnus himself was a high achiever but a number of historical documents confirm that he, among other things, put Zeus to sleep and helped win the Trojan War.