Thursday, 12 November 2015

evolution - What is the evolutionary rationale for palm sweating?


Sweaty palms seems to be a reaction to stress, anxiety, etc. For our forest-inhabiting primate ancestors sweaty palms could cause unwanted side-effects such as slipping off tree branches under stressful conditions, like when being chased by a predator.



Why did palm sweating became a reaction to fear, worry, anxiety etc in the course of human evolution? What is the benefit of sweaty palms?




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