I’ve heard from all sorts of places that it takes 43 muscles to frown and only 17 to smile (the numbers vary), but I can tell you from experience that spending half an hour grinning is a lot more ...

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, ...