We all smile. It’s a universal sign of happiness, agreement, and warmth. From a quick grin with a stranger to a heartfelt laugh with loved ones, smiles grease the wheels of social interaction ...

Yet the challenge remains: how do you fake authenticity? Engineers can program a smile, but without the micro-contractions around the eyes, many of these expressions still seem disingenuous.

A study found that employees who forced themselves to smile at work in front of customers were at a greater risk for heavier drinking once they got home.

However, a new study suggests that all that fake smiling might actually have a serious impact on your habits back at home.

How to Tell If Someone’s Smile Is Fake (and What It Means for You) Smiles are a universal sign of pleasure and happiness, but fake ones cause real problems.

Authentic smiles predict well-being, happy marriages, and long lives. But the thing is, they're un-fakeable. The Association for Psychological Science sketches out the physiological reasons why: A ...

Adding a smile to your to-do list can ease the stress of multitasking. frankjuarez/Flickr PROBLEM: Happiness makes us smile, but can smiling make us happy? Even if it's a fake smile, because your ...

A New Study Shows a Smile (Even If It’s Fake) Instantly Reduces Stress and Anxiety, and Can Make You Happier and Healthier Force a smile for 20 seconds and boom: less stress, broad health ...