Odd, I had my % body fat done recently for the first time and he did back of arm, under shoulder blade on my back, and stomach.
I would have kicked butt if he did stomach and thighs.
Doing my back is what killed me. I was a "4" for the back of my arm. He couldn't pinch anything. My back was horrible, even though to the naked eye it looks fine.
I work out heavily and was bummed to end up with 17.6% bodyfat !!! Im a slim guy.
HairLossTalk.com