Endurance running hypothesis

The endurance running hypothesis is a series of conjectures which presume humans evolved anatomical and physiological adaptations to run long distances and, more strongly, that "running is the only known behavior that would account for the different body plans in Homo as opposed to apes or australopithecines". The hypothesis posits a significant role of endurance running in facilitating early hominins' ability to obtain meat.

Source: Wikipedia — Endurance running hypothesis (CC BY-SA 4.0)