A neutral smile produces characteristic wrinkles around the eyes.
Insincere people smile only with their mouth.
Photographers ask you to say 'cheese' because this word pulls back the zygomatic major muscles.
The more you smile,
the more +ve reactions others will give you.
From a man's perspective,
saying that a woman has a good sense of humor doesn't mean she tells jokes;
it mean she laughs at his jokes.
When asked to describe his emotions in this shot,
most people describe him as relaxed and happy because of his apparent smiling face.
When the shot is turned, you get a completely different view.
Your brain can even identify a smile when a face is upside down.
This illustrates the powerful effect a smile has on us.
[ He who laughs, lasts ]
