Apparently being able to sweat is one of the key advantages of humans. Few can compete with humans in long distance running, and following prey until they are e

Apparently being able to sweat is one of the key advantages of humans. Few can compete with humans in long distance running, and following prey until they are exhausted is a common human hunting tactic. Don't underestimate that soft skin. Also, allowed humans to hold out in all sorts of climate zones of the world.