LOL!!!!!!!!!! Guess he's never met some football players at my school who are actually smart and were built like tanks.
He is a guy I know who I used to skateboard with. And guess what: he weighs 120 pounds wet and in boots, and couldn't fight his way out of a wet paper bag.
...meaning you would be more dextrous, if not, smarter, right? I mean, bodies do adapt, as does the brain However, doing physical activity, in my opinion, is smarter than sitting in a room with 20 other people staring at a white-board. What happens when you don't think fast in basketball? WHAM.