Science

Why do we have chins?

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ANSWER

Perhaps the most common explanation is that our chin helps buttress the jaw against certain mechanical stresses. Chin shape may also be a result of sexual selection, because men have stronger chins than women in most cases, hinting that perhaps women choose mates with larger chins.

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The chin helps protect the jaw against certain mechanical stresses, including chewing, which takes a great deal of force.

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