Is creatine a good call? Will maca powder really boost testosterone levels, or is that all hot hair? What exactly is a “special blend”?

There’s no way around it. Buying supplements is mind-boggling—and just plain scary. But our partners at Greatist.com recently clued us in to a new resource called Examine.com. The website’s goal: to take the guesswork out of the supplement-buying process via its “Human Effect Matrix,” a color-coded table that translates scientific studies into information you can actually understand—and use to better your health and fitness.

To see how the Human Effect Matrix works—and to learn whether the site is truly legit—read the full article on Greatist.com.

Got a question about protein supplements or fat burners? Check out MF’s 2013 Supplement Guide