This won't be news to my dancing friends:
Dancing makes you smarter, especially if you're continuing to learn new dances and movements. Additional mind/body connections enhance your brain power and make you even more beautiful. (OK, that's not in the study, but I'm sure it applies to you.)
The more dances you learn, the more you stay out of your existing comfort zone, the more your brain benefits. It's not just a better body, it's a better you.
You already know that, because you are already way smarter than your friends, but now we know why you're so smart. (Some people might think about me, "Hmmm, how dumb would he be if he didn't dance?" but I'll pretend those people aren't my closest friends... ;)
Since you've been dancing you've been telling everybody you feel better and clearly you look better. A recent study revealed that partner dancing is best, and follows automatically grow additional brain power from partner dancing.
To paraphrase Richard Powers, a dance instructor at Stanford University: Follows don't really "follow," they actually interpret the cues from their leads, making hundreds of "in the moment" decisions during each dance. The more decisions per dance, the more brain power is enhanced.
Leads can also benefit from partner dancing, if they are also changing the dance based on the real-time music and their partners responses. Leads grow their brain power while learning new patterns, new dances and movements, and interpreting the music in real time.
In others words, follows have to be in the moment, waiting for your lead, so they enhance their thinking just being in the game. If leads want to maximize growth, they have to be sure they aren't just stringing together mindless patterns they have memorized previously.
It's making the real-time decisions based on your partner and the music that enhances your brain power. Adjusting and reacting to your partner makes it a better dance, and a better future too.
Richard Powers Blog (inspiration for this article)
Original Study from New England Journal of Medicine (a bit dry)