A smile may seem simple, but it is actually the result of a complex set of chemical reactions that occur in the brain. A recent study found that when people are feeling good about their lives, levels of dopamine and oxytocin rise significantly. This hormone surge increases the production of endorphins which help to combat stress and anxiety as well as improve our immune system response to disease-causing agents such as viruses and bacteria.

Smiling initiates a chemical reaction in the brain, releasing neuropeptides that combat stress and triggering neurotransmitters like dopamine and serotonin, which enhance feelings of happiness and well-being. This phenomenon, known as the facial feedback hypothesis, suggests that the act of smiling can influence our emotional experience, leading to reduced stress and improved mood.   

Moreover, smiling is contagious; observing someone else’s smile can activate your brain’s reward system, prompting a reciprocal smile and fostering positive social interactions. This shared exchange not only strengthens social bonds but also contributes to an overall sense of community and belonging, further enhancing individual happiness. 

Source: Psychology Today

https://www.psychologytoday.com/us/blog/cutting-edge-leadership/201206/there-s-magic-in-your-smile