Let’s explore the fascinating and sometimes concerning ways that mouth breathing literally changes the shape of your face. The evolutionary mismatch that started it all Humans evolved to breathe ...

The proportions of the smile are not correct; the mouth extends too far into the cheeks of the face. The lips are parted a bit, which—try it—is impossible to do while also smiling as broadly ...

Many Americans look at the mouth to judge a person’s mood, but people smile for all sorts of reasons: anger, fear, embarrassment, confusion, to deceive. It’s really your eyes that give you away.

When feeling stressed, try forcing a smile on your face. If you can manage a genuine, Duchenne smile—what people often refer to as “smiling with your eyes,” not just your mouth—that’s ...

He found a simple smile involves the contraction of the zygomatic major muscle. This muscle is basically all one needs to raise the corners of their mouth.

It's World Smile Day! How do you read body language in a mask? People can tell if you're smiling while wearing a mask because of your eyes. Tips on reading emotions.

An original Harvey Ball smiley face (image: The World Smiley Foundation) In the 1994 Robert Zemeckis film, Forrest Gump stumbles into the history books as he runs across the country. At one point ...

As Dr. LaFrance described it, it is the social, obligatory smile — “which is the one that women do the most,” she said — that tends to be focused on the mouth muscles, easily covered up by ...