Photos of smiling nuns taken when they came into religious service when they were in their early 20s, reveal which will live the longest. The right type of smile, wrong type of smile, it makes a difference.
While conducting research on the physiology of facial expressions in the mid-19th century, french physician Guillaume Duchenne identified two distinct types of smiles. A “Duchenne smile” involves contraction of both the zygomatic major muscle (which raises the corners of the mouth) and the orbicularis oculi muscle (which raises the cheeks and forms crow’s feet around the eyes). A non-Duchenne smile involves only the zygomatic major muscle. Many researchers believe that Duchenne smiles indicate genuine spontaneous emotions since most people cannot voluntarily contract the outer portion of the orbicularis oculi muscle. The young women who were fated to be long-living and healthier nuns, wore the Duchenne smiles in their entry photos.
Fake smiles, on the other hand point a person in the direction of greater stress and greater illness. “A study of city bus drivers led by a Michigan State University business scholar found that the drivers who fake smiles at work worsen their mood throughout their day, which in turn affects their productivity. The problem is that smiling for the sake of smiling can lead to emotional exhaustion and withdrawal. Women were hurt more than men by the fake smiles, which the researchers attribute to the fact that women are both expected to and do show greater emotional intensity and expressiveness than men.” Link to article
Meditation masters have picked up on the power of the smile. Buddhist, Thich Nhat Hanh makes a simple smile part of his basic mindfulness practice (link to article) Modern Taoist and teacher, Mantak Chia carries smiling instruction further by having us smile to the many parts of our body using an actual smile and our mind’s eye. Each part gets a smile and the opportunity to bath in good will and relaxation. Link to article on Chia’s methods Link to Chia’s book, The Inner Smile