5. It takes 43 muscles to frown and only 17 to smileJuly 9, 2013
Can’t those scientists count?
According to Shamini Bundell on Null Hypothesis
….Various experts have tried counting the muscles involved. Mainly they argue over how to define a smile and a frown and come up with different answers.
Either way most of the numbers quoted at you by irritatingly cheerful people are entirely made up.
As Shamini noted “It takes 37 muscles to frown and 22 to smile, but it only takes 4 to reach out and punch someone in the face.”