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.

This post is part of a series sponsored by Internet Explorer 9. Learn more here. Missed the tweet and just now seeing this post? Pin this page in IE9 to see all of the content as it happens. Phil Libin of Evernote talks with TNW's Courtney Boyd Myers about why he started the company.

TheBrain provides advanced Mind Mapping Software and Knowledge Management Software that uses visualization and intuitive concept maps to enable intuitive searching, browsing, and organization of information. Disparate data sources are integrated and connected into an associative knowledge network to enable recall, understanding, and communication.

Mindjet provides productivity and collaboration solutions that visually connect ideas, information and people to save time, solve real business problems, improve business processes, and drive innovation.

Forging Elite Fitness. CrossFit is a core strength and conditioning program. We have designed our program to elicit as broad an adaptational response as possible. The CrossFit Program was developed to enhance an individual's competency at all physical tasks. Our athletes are trained to perform successfully at multiple, diverse, and randomized physical challenges.