"When you're smiling, when you're smiling, the whole world smiles with you." Yes, the old song is right; smiles are contagious! But that's just one of the superpowers of a smile. Various researchers have already compiled a long list of the benefits of smiling.
As they hovered over their victims, knives at the ready, Carney Landis issued his instructions. The beheading was ready to commence. It was 1924 and this particularly sadistic grad student had lured an assortment of fellow pupils, teachers and psychology patients - including a 13-year-old boy - into a room at the University of Minnesota.
Duchenne was interested in the mechanics of facial expressions, including how the muscles of the face contract to produce a smile.
The Duchenne‘ smile is long and intense, though it involves the contraction of just two muscles. First the zygomatic major, which resides in the cheek, tugs at the corners of the mouth, then the orbicularis oculi, which surrounds the eye, pulls up the cheeks, leading to the characteristic ‘twinkling eyes’.