When we are in a good mood, a broad smile gradually forms on our face. Though it's not natural to smile when we are in a bad mood, it turns out that putting a smile on our face can make us feel actual happiness, joy or amusement. Smiling on purpose changes the brain chemistry. Therefore, if people intentionally smile, they end up feeling the emotion they go with it. But how do you smile when you are down? When a person smiles, it uses all the muscles in the face, including the "laugh lines" around the eyes. Engaging all these muscles will help even a fake smile looks genuinely real.
Do you think a fake smile is the most effective way to life up the mood? Personally, I believe a fake smile is ineffective. Joker has smiled a lot but he doesn't look that happy to me. What do you think?