Hypnos of the most famous works of art featuring Hypnos is a bronze head of Hypnos himself, now kept in the British Museum in London. This bronze head has wings sprouting from his temples and the hair is elaborately arranged, some tying in knots and some hanging freely from his head. The English word "hypnosis" is derived from his name, referring to the fact that when hypnotized, a person is put into a sleep-like state (hypnos "sleep" + -osis "condition"). The class of medicines known as "hypnotics" which induce sleep also take their name from Hypnos. Additionally, the English word "insomnia"
Twins in mythology In Zoroastrian mythology, the twins Ahriman and Ahura Mazda represent the spirits of evil and good. Good and evil are common conflicting personas within twins in mythology. We see this pattern across many cultures, such as several northeastern Native American tribes, for example. Gluskap, the creator God and cultural hero, had to defeat Malsum, his evil twin, who was the ruler of the demons. Many other cultures with rival twin heroes often follow this structure of split moral forces. Twins can also be shown as having special powers and deep bonds. In Greek mythology, Castor and Pollux share a bond