Ron Gutman in a beautiful talk at TED a conference highlights the importance of smiling citing research. In a few bullet points he studies the importance of smiling and it's impact on our well being
- It has been shown that those who smile more live longer
- Smiling induces hormones in the brain that reduces the amount of stress enhancing hormones
- Smile + Frown = Smile. If you are smiling, it is difficult for people to frown at you. Smiling is actually contagious
- Smile makes you look more competent in the eyes of people
- Smile induces activity in your body that correlates with healthier amount of blood pressure.
I'd recommend you to watch this 7 minute talk on YouTube.