Heart Eyes is like a box of assorted Valentine’s Day chocolates, offering up a variety of different flavors—Horror! Romance!

Smile. Smiling is as common as it is powerful—yet often underappreciated. According to Dental Associates of Florida, adults smile on average 20 times a day. While we think of a smile as a simple ...

But a Duchenne smile is characterised by the additional contraction of the orbicularis oculi, crumpling the skin around the eyes into crows’ feet. Duchenne’s finding was largely overlooked at ...