Peak Human Stamina

Users of this ability have highly developed musculature that generate less fatigue toxins than the musclelature of most other humans, enabling them to gain greater endurance. Users could exert themselves at peak capacity for several hours without use of rest before showing a signs of fatigue.

Capability
Peak users of this ability are enabled to run for so many hours (maybe days) and not lose breath.

Limits

 * May need an object to increase their stamina

Known Users

 * Captain America (Marvel)
 * Robin (DC)
 * Batman (DC)
 * Slade Wilson (DC)
 * Black Panther (Marvel)
 * Black Widow (Marvel)