A happy career and personal life from smiling?
That’s what a study published in Journal of Personality and Social Psychology discovered. Researchers at the University of California, Berkeley, went through old college yearbook photos and found the grads 30 years later. What they discovered was interesting: women with the widest smiles in their photos were most likely to be happy in their careers–and marriages. They also had fewer setbacks in life than the women with tight-lipped expressions.
Smiling engages at least three muscle groups, increasing bloodflow, and boosts circulation of immune cells.