That's it! We will teach you to smile!

There are so many muscles involved in real smiles that people often forget about them when they want to appear happy. We smile to camera effortlessly, we may even show a polite grin but we can't produce a genuine smile on demand. That's why a Duchenne smile is a very accurate reflection of our mood.

The smile was named after the French physician Guillaume Duchenne, who studied the physiology of facial expressions in the nineteenth century.

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