Within 400 milliseconds, your brain and face begin responding to another person's smile, setting off a cascade that researchers are only beginning to understand.
The Body Optimist on MSN
Can a smile truly reveal the strength of a couple? This test supports the idea.
A smile is contagious and spreads from mouth to mouth, especially between two smitten partners. If your other half mirrors ...
Okay, so I may look goofy right now, cheesing at you all, but did you ever notice how a person's smile can be contagious, where you find yourself smiling because they are smiling? It's one of the most ...
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