Superhuman Stamina represents an individual's physical heartiness and their ability to function without tiring or undue strain. Characters who possess this power can often go for long periods of time without rest or even sleep. This power often works in combination with Superhuman Strength and Invulnerability. An individual may develop enhanced stamina either through alien heritage, genetic manipulation or biological augmentation. Other characters may develop enhanced stamina through mystical means, or through divine intervention. Most deities, including the New Gods possess superhuman stamina. Characters with Super-Speed may possess increased stamina to a limited degree, but are often restricted by other factors relating to their speed-based abilities such as increased metabolism, etc.