Not sure anymore hahaha. I originally thought that was weird too but when I measured a jacket and blazer I have, they're at 8"...but yeah, If i wanna layer or decide to get bigger then I guess it's safer to even add .25". yes, natural. I've slimmed down from 17" from a few years ago when I was training to be big. Now I realize I just want to slim down and fit into clothes better. I fluctuate from 185 to 165lbs, 5'9", 32 waist.