Humans hot, sweaty, natural-born runners
Humans best long distance runners in the animal kingdom. "Lieberman said humans likely practiced persistence hunting, chasing a game animal during the heat of the day, making it run faster than it could maintain, tracking and flushing it if it tried to rest, and repeating the process until the animal literally overheated and collapsed."
http://www.physorg.com/news95954919.html
Humans best long distance runners in the animal kingdom. "Lieberman said humans likely practiced persistence hunting, chasing a game animal during the heat of the day, making it run faster than it could maintain, tracking and flushing it if it tried to rest, and repeating the process until the animal literally overheated and collapsed."
http://www.physorg.com/news95954919.html