It's almost the weekend again, and here is an article containing totally useless information for you! Mind you - if you can figure it out, then you may spend a more relaxed weekend - at least facially....! Of the 36 muscles used to create facial expressions, only a fraction are used in smiling. The precise number involved can vary, depending on an assortment of factors. Some people, for example, argue that eye crinkles are part of a genuine smile, and that therefore the muscles involved in this activity should be considered part of the number of muscles required to smile. Researchers have also discovered that people from different areas of the world smile differently, although they may use many of the same muscles. Different types of smiles have also been extensively documented, ranging from the zygomatic or genuine to the utterly fake. People make smile-like expressions for a variety of reasons and in an assortment of ways, and each requires slightly different muscle mov...