Smile and people may say, "You're looking younger!"

The next time a camera or smartphone lands in front of your face make a point to show some teeth and smile.

But only if you want to look younger.

A new study found that when people smiled in photos, people thought they were an average of two years younger than they actually were.  And some people looked up to four years younger.

And when people looked sad or angry in pictures, they looked an average of one year older than they really are.

There's a lesson here.  Say CHEESE!

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