Wrestling is the act of physical engagement between two unarmed
persons, in which each wrestler strives to get an advantage over or
control of their opponent. Physical techniques which embody the style
of Wrestling are clinching, holding, locking, and leverage.
Avoiding techniques likely to lead to serious injury, ritual fighting,
but its basic principles are closely related to those of military
hand-to-hand combat or self-defence systems. Many styles of Wrestling are known all over the world and have long histories, and sport Wrestling (particularly amateur Wrestling) has been an Olympic sport for over one hundred years. The Epic of Gilgamesh in Sumerian literature features its hero Gilgamesh establishing his credibility as a leader after Wrestling Enkidu. Other sculptures and literature from ancient Mesopotamia show that Wrestling was held in popularity. One other early (probably circa 1500 BC) description of Wrestling appears in the Old Testament book of Genesis 32:22-32. The passage depicts the patriarch Jacob Wrestling with the Angel, for which Jacob was subsequently renamed Israel. (Israel translates to "wrestles (or strives) with God".)