(Based on the essay “Where’d You Get That Smile!” posted July 12, 2011.)
Practice smiling more throughout the day. Notice how many people smile back at you. Can you detect any change in your mental and physical well-being, and social likability?
Expand on this:
Take this online test to see if you can determine if a smile is real or fake. http://www.bbc.co.uk/science/humanbody/mind/surveys/smiles/