Facial expressions are a universal way of communicating

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The human face has over 40 muscles that control our facial expressions.

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Smiling is not just a sign of happiness;

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it is also a signal for social bonding and trustworthiness.

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The human face is capable of more than 10,000 facial expressions and the number may be even higher.

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A smile can make you more attractive or less intelligent depending on the culture

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The human tongue weighs about 3 pounds, but the average person uses only 20% of their tongue's muscle power at any given time.

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