From Kickstarter project: http://www.kickstarter.com/projects/23182138/smile-youre-living-longer
Smiling has been found to --
- Boost mood, ease pain, through bursts of dopamine & oxycontin.
- Promote relaxation & repair, by holding stress hormones back.
- Increase oxygen in the blood, empowering muscles & organs.
- Correlate with longevity, according to one study.
And more ... For example, UK researchers found that a single smile may deliver the same pleasure hormones as 2,000 chocolate bars!
GOOD SOURCES with research references:
GOOD VIDEO on value of smiling: