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 ...

Other bodily experiences, like clenching muscles, could make someone feel more tense through a similar type of so-called sensorimotor feedback. But exactly how this plays out in the brain is unclear.

They've uploaded a video tutorial on their Facebook page to show people how to make a smile mask from home using a sewing machine and some fabric. "Make them, improve them, if they can be better ...

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, ...