Nine Ways To Make Yourself Smarter

It often seems like everything you do, touch, or eat can make you smarter or dumber. But that's not quite the case. There are, of course, plenty of ways to tweak your life in order to gain yourself a little cognitive advantage over the competition. The problem is that some have very little real effect. Others are more trouble than they're worth.
Here's a guide to some of the most effective ways to boost your brain power.