
Originally Posted by
Muirenn
Oh, thanks! I just did it, and can see even without an assistant that I hold my arms quite wide naturally.

The anatomical measurements are nice (acromnion span, outer deltoid span, etc) but they really only tell you the dimensions of part of the body. They don't tell you where your arms like to be.
Where they like to be is often where they are most efficient, as well.
What if I have narrow shoulders, but my lungs and ribcage like to expand outwards a lot? I'm going to naturally hold my hands a bit wider, and a bar that matches my shoulder span might not put my arms at the width that lets me breathe most efficiently. Or maybe I've got tremendous pect strength, and my shoulder girdles are most stable slightly protracted. Putting me on a bar the same width as my shoulders might cause me to lose the strength and stability I get from bringing my arms closer.
Function is key!
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson