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27 July, 16:10

Researchers have found that smiling is something: 1. we learn to do as babies. 2. we learn to do in childhood. 3. that means different things in different countries. 4. that is innate; we don't learn to smile, we just do it.

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  1. 27 July, 17:43
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    4 - That it it innate; we don't learn to smile, we just do it.

    Smiling is produced when neuronal signals are transmitted to the facial muscles whenever endorphins are produced.
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