So, for all you students out there, school is starting next month, (cue Suspenseful Music.) and if you’re anything like we were as a kid, your summer was spent exercising any part of your body but your brain, yes? Get the old gray matter firing on all cylinders again with Match Wits With Mensa: The Complete Quiz Book. ($16) Replete with over 800 word games, trivia, logic riddles, number challenges, and visual puzzles, it’ll test every part of your brain. And those of us who’ve spent our post-graduate years reading tabloid-based novels and, um, working on other parts of our bodies? Start doing a few quizzes a day, and maybe, just maybe, your preferred weekly magazine purchase will go from Us Weekly to The Economist.