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At the age of about 20 years, an average human female's brain weight is around 1300 grams, while a male's brain weight is around 1450 grams. This is because the "average male" is physically larger than the "average female." But there's no correlation between brain size and intelligence within healthy members of the same species. The brain doesn't work like a muscle -- it doesn't get bigger if you exercise it more, and a bigger brain doesn't necessarily make you smarter!

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14y ago

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