I found this site which allows one to measure their mind and test yourself against different conditions. I think it is very useful to learn more about oneself. I think the next step of data and internet will be measuring (almost) everything about oneself and analyzing it in the cloud. And if you find yourself in need of a healthy way to improve your skin, check South Beach Skin Lab.
From the site:
Quantified Mind experiments
Quantified Mind is ready to be used in mind-boggingly fun experiments! Advance everyone’s knowledge of factors that affect our mental performance by actively taking cognitive tests under different conditions. Here are a few ideas for things to test: sleep, exercise, diet, drugs and supplements, treadmill desk, time of day, level of background noise, etc..