Hypnos comes from the name of his Latin counterpart, Somnus. (in- "not" + somnus "sleep"), as well as a few less-common words such as "somnolent", meaning sleepy or tending to cause sleep and hypersomnia meaning excessive sleep, which can be caused by many conditions (known as secondary hypersomnia) or a rare sleep disorder causing excessive sleep with unknown cause, called Idiopathic Hypersomnia. 3D model of "Bronze head of Hypnos" via laser scan of a cast of British Museum's bronze. Hypnos In Greek mythology, Hypnos (; , "sleep") is the personification of sleep; the Roman equivalent is known as Somnus. In the
Greek mythology "On the Trojan side:" "On the Greek side:" Mythology was at the heart of everyday life in Ancient Greece. Greeks regarded mythology as a part of their history. They used myth to explain natural phenomena, cultural variations, traditional enmities and friendships. It was a source of pride to be able to trace the descent of one's leaders from a mythological hero or a god. Few ever doubted that there was truth behind the account of the Trojan War in the "Iliad" and "Odyssey". According to Victor Davis Hanson, a military historian, columnist, political essayist and former classics professor, and John