From the set up to the way the ball leaves the hand, the movements are controlled and precise. Using the shoulder of the non-pitching as their gunsight, the lower body for power and hopefully the center for control. A good pitcher knows how to activate the core and use it to not only provide power, but to place the ball exactly where it needs to be.
Lets be honest. As we approach 50 and above we all look at our faces and bodies to examine the signs of aging. I rarely have clients tell me they are happy with what they see and use cosmetics and all different means to look as good as they can. But it is through core strength and body awareness that we can maintain our physical best internally and externally.