Sweat Powered Human Persistence Hunting

Humans are experts at sweating: in one hour, a horse can lose about 100 grams of water per square meter of skin, while a human can easily shed 500 grams per square meter, which helped our ancestors become unrivalled predators, as we can stalk prey until they collapse from heat exhaustion. This, combined with our hairlessness and endurance running, let early humans practice persistence hunting in the heat of the day, chasing animals for 10 to 15 kilometers until they overheated and collapsed.

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