Check out this website that consists of pitchers’ faces. They’re really funny so enjoy. But while enjoying also realize, pitching takes effort. Effort means demanding the out of your body. More specifically pitching takes a whooooooole lot of core strength.
Try this experiment: Flex your biceps as hard as you can and smile. Now flex your legs as hard as you can and smile. Finally flex your abs as hard as you can and smile.
Which one did you feel actually affect your face?
Now go do some crunches…