15 Fascinating Facts About Smiling!
Everyone loves the quote “laughter is the best medicine!" It's a true quote, smiling can boost your mood and even your immune system. Did you know that babies start smiling in their sleep as young as four to six weeks? Keep reading for more interesting facts about your smile!
http://www.pickthebrain.com/blog/15-fascinating-facts-about-smiling/#more-2917
