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pogonyaev
3 years ago
14

Researchers have found that smiling is something: 1. we learn to do as babies. 2. we learn to do in childhood. 3. that means dif

ferent things in different countries. 4. that is innate; we don't learn to smile, we just do it.
Social Studies
1 answer:
AleksandrR [38]3 years ago
8 0

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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