Smile - how often do you smile ! – do you always greet people with a smile ! – can you smile at strangers as also at people, who are not liked by you ?? (pic taken in May 2019)
Primarily a Smile, is a facial expression in which the eyes brighten and the corners of the mouth curve slightly upward and which expresses especially amusement, pleasure, approval, or sometimes scorn. Among humans, a smile expresses delight, sociability, happiness, joy, or amusement.
A
Duchenne smile involves contraction of both the zygomatic major muscle (which
raises the corners of the mouth) and the orbicularis oculi muscle (which raises
the cheeks and forms crow's feet around the eyes).
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