Her various durability levels originally stemmed from her Amazonian training. In post-Golden Age and Pre-52, Demeter (Goddess of the Earth) granted her immunity to radiation and the coldness of space; she also possesses a high level of resistance against fire and high temperatures, she has been shown taking fire, lava, thermonuclear explosions, hell fire and even superman's heat vision, however, her invulnerability has a vulnerable point against piercing weapons. Wonder Woman can fight with and withstood considerable damage in the form of hand to hand combat with opponents such as Superman and Gods. Wonder Woman possesses a high resistance to damage and magical attacks. Also she was self-sufficient in the fact that Wonder Woman did not have to eat or sleep and could hold her breath under water for hours and hours. This may still hold true in the new 52, Wonder Woman has still shown the ability to fight on with little to no rest or food to replenish her strength.
Pérez and Potter wrote Wonder Woman as a feminist character, and Pérez's research into Greek mythology provided Wonder Woman's world with depth and verisimilitude missing from her previous incarnation. The incorporation of Greek gods and sharply characterized villains added a richness to Wonder Woman's Amazon heritage and set her apart from other DC heroes.