There is a face-lift you can perform yourself that is guaranteed to improve your appearance. It's called a smile. A smile improves your looks and takes years off your appearance. Who doesn't want that ...

It can be awfully cute when babies smile in their sleep—but is it a real smile, or just a reflex? We turned to experts to learn more. Among all of your baby’s first milestones, smiling is arguably one ...

You’ve probably heard the claim that it takes more muscles to frown than to smile. It’s usually framed as a feel-good reason to turn your frown upside down – less effort, more joy. But anatomically, ...