Our hands evolved to punch and not only to acquire the ability to use tools, play musical instruments or create works of art, according to a study by the University of Utah who publishes the Journal of Experimental Biology. Its author, biologist David Carrier, has compared the hands of humans and other apes has come to the conclusion that the fact that humans have smaller palms and long, strong fingers, plus flexible thumbs, should inter alia, the role played by aggression in our evolution. "The proportions of our hands are the most suitable deal a good punch," said Carrier, adding that the anatomy of our upper extremities is configured in such a way that protects the most delicate bones, muscles and ligaments in single combat hand.
When our ancestors evolved, "those individuals capable of giving a strong blow with clenched fists without getting hurt could fight better for couples and, therefore, had more options to reproduce," the researcher swim. The fights were also motivated by consuming food and water, earth, and even by "pride, reputation and revenge". "The selection of the ability to fight alongside the evolutionary advantage was supposed to be more skilled, influenced the evolution of the proportion of our hands," says Carrier.
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