A smile is a facial expression formed primarily by flexing the muscles at the sides of the mouth. Some smiles include a contraction of the muscles at the corner of the eyes. Smiles performed without the eye contraction can be perceived as “fake”.

Among humans, smiling is an expression denoting pleasure, sociability, happiness, or amusement. It is distinct from a similar but usually involuntary expression of anxiety known as a grimace. Although cross-cultural studies have shown that smiling is a means of communication throughout the world, there are large differences between different cultures, with some using smiles to convey confusion or embarrassment.

Here are some picture facts about the smile.. scroll down and get a look at those.

1. Smiling by numbers

2. Do you aware of how many times you smile a day

3. Smile is one of the most effective medicines.

4. Is that true or fake… ??

5. Its true smile can give work for some of our facial mussels.

6. Smile a power bank

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