caption: Fun facts about smiling: Smiling boosts your immune system Smiles relieve stress by releasing endorphins It is easier to smile than frown It takes 5 to 53 muscles to smile <PERSON> are born with the ability to smile There are 19 different types of Health Facts, Health Quotes, Health Tips, Your Smile, Make Me Smile, Smile Smile, Happy Smile, Funny Weird Facts, Crazy Facts
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