I've just heard your mind is better able to recruit strength from the dominate side so your body doesn't need to brute force it with extra muscle. My left pect

I've just heard your mind is better able to recruit strength from the dominate side so your body doesn't need to brute force it with extra muscle. My left pectoral is noticeably (to me) larger than my right dominate one. Not sure if that is the recruitment effect or if I somehow favor that side when lifting.