Tuesday, November 30, 2004

Smile at Someone Today!

In physiology, a smile is a facial expression formed by flexing muscles most notably near both ends of the mouth, but also around the eyes. Among humans, it is customarily an expression of pleasure or amusement, but can also be an involuntary expression of anxiety. Studies have shown smiles to be a normal reaction to certain stimuli and occur regardless of culture, and is also not a reaction one learns, but is born with, as children blind from birth smile. Among animals, smiles are often used as a threat (since it exposes the teeth) or a sign of submission.

Smiling not only changes a facial expression, but can also make the brain produce endorphins which reduces physical and emotional pain, and give a greater sense of well-being.
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