What makes a smile feel so powerful?
The Smile Contagion
What makes a smile feel so powerful?

Someone smiles at you across a room, and something in your chest goes warm before you've even decided to feel anything. Strange, isn't it? A smile is just a face folding in a particular way. So why does it land like a tiny gift?
Start with the face itself. A real, can't-help-it smile uses two muscles at once: one tugs the corners of your mouth up, and another crinkles the skin around your eyes. That eye-crinkle is the secret ingredient. Polite, pretend smiles forget it. Genuine ones can't help it.
