It’s a universal sign of happiness: While hand shakes, hugs, and bows all have varying meanings across cultures, smiling is known around the world and in all cultures as a sign of happiness and acceptance.
There are 19 different types of smiles: UC-San Francisco researcher identified 19 types of smiles and put them into two categories: polite “social” smiles which engage fewer muscles, and sincere “felt” smiles that use more muscles on both sides of the face.
Smiles are the most easily recognizable facial expression: People can recognize smiles from up to 300 feet away, making it the most easily recognizable facial expression.
Smiles are contagious: It’s not just a saying: smiling really is contagious, scientists say. In a study conducted in Sweden, people had difficulty frowning when they looked at other subjects who were smiling, and their muscles twitched into smiles all on their own.
Smiles are more attractive than makeup: A research study conducted by Orbit Complete discovered that 69% of people find women more attractive when they smile than when they are wearing makeup.
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