I WONDER - How Many Muscles Does It Take To Smile?

The video explains that smiling involves 43 muscles in the face, as all facial muscles can be engaged in a big smile. It also discusses how nerves from the brain control these muscles. The video concludes by comparing the muscle usage in smiling and frowning, noting that both actions use a similar number of muscles.

What is the role of the brain in smiling?

Is it true that frowning uses more muscles than smiling? Justify your answer.