Youve probably heard the claim that it takes more muscles to frown than to smile. Its usually framed as a feel-good reason to ...

What makes a smile feel sincere or fake is due to a surprising blend of facial anatomy, neurology and emotional authenticity ...

Several significant characters won't be back for And Just Like That season 3. Life & Style breaks down which cast members aren't returning to the HBO series.

Imagine seeing your body from the inside out, a hidden world where more than 30 trillion cells are constantly renewing and regenerating to keep you alive. Men typically have around 36 trillion cells, ...

Fake or polite smiles, on the other hand, usually involve only the mouth muscles. The eyes remain wide or indifferent, and ...