Case in point: The chemists who developed synthetic steroid compounds in the 40's and 50's were bookwormish, scrawny nerds who could profit the least from them; they weren't made by Serio Olivas, Flex Wheelers and Ronnie Colemans. People who are more physically gifted in general tend to be less 'intellectual' for lack of a better word. There are exceptions; also skinny, ascetic physicists or poets are rarely great pumpers of iron. Evolutionary development and distribution; the brightest lack the physical qualities whereas the most physical lack the cerebral qualities. That said, I agree with no known correlation that is as of yet demonstrable...
This view is quite flawed. Those bookwormish, skinny guys were interested in The Sciences, they spent their time doing what they liked. If they took up bodybuilding, as well, one does not know if they had good or okay genetics for bodybuilding. You see, most people concentrate on one thing (especially in America) instead of being a whole person, and having a varied of interests. The "Jack of All trades, and a Master of None", seemingly doesn't apply to most people anymore. I had a friend in College who carried 26 credits his last two semesters (very hard to do) and we called him "Beast" , because he was like the "Beast" in the X-men comics, he was very intelligent, plus he was a bodybuilder, a stripper, and ladies man. He was a Poly Sci major and went to law school.
It's just a matter of what people are interested in...or the effort they put in it.Don't use this for your lack of work ethic or lack of gaining weight, by coming up with the excuse of "intelligent people don't have the genetics for bbing"