endurance-running hypothesis

The endurance-running hypothesis suggests that human long-distance running ability evolved approximately two million years ago with the emergence of the genus Homo. This adaptation is thought to have aided in predation, specifically through persistence hunting, where hunters exhaust their prey by chasing them over long distances, often in hot environments.12

Human anatomical features supporting this hypothesis include:
* Sweating: Humans have numerous sweat glands for efficient cooling.13
* Reduced Body Hair: Less hair allows for better heat dissipation compared to other apes.1
* Bipedalism: An upright stance and striding gait are energy-efficient for long distances.34
* Foot and Leg Structure: Shortened toes, lengthened legs, and a robust heel provide stability and propulsion.24
* Musculoskeletal Adaptations: Large gluteal muscles and a nuchal ligament help stabilize the body and head during running.2

While some scholars support this theory, others argue that persistence hunting was rare and that early humans may have used endurance running more for scavenging or traversing varied habitats.12