Many people don’t realize that there are various health reasons why someone might feel uncomfortable showing their teeth when ...

A smile means that someone is happy—or maybe not. Although we associate smiling with happiness, people can use a smile to convey a whole range of different messages. Research in nonverbal ...

Smiles often mask true feelings, serving as protective gestures rather than expressions of joy. Genuine smiles involve the eyes and fade naturally, while fake ones appear on cue with stiff mouths and ...