CHAPTER 1

THE SCIENCE BEHIND YOUR SMILE

A smile can brighten the darkest day.

—Author Unknown

As I began to research this book, I was amazed at how much had been written on the subject of smiling. A quick Google search will bring up hundreds of results, ranging from scientific experiments published in medical journals to lighthearted articles in health magazines. Now, some of you may have loved science and math when you were in high school. If you did, awesome! You’re going to love this chapter. For the rest of you, bear with me through the chapter, because understanding the basics of the physical and chemical process of smiling is crucial. I’m going to give you my very simple version of what I learned (because I am a very simple guy), but ...

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