We all know that testosterone builds muscle, right? In fact, artificially juicing for higher “T” levels is what makes the giant pro bodybuilders such freaks of nature. It’s also why you can find a bazillion ads for testosterone boosting supplements ...

Those of us who eat 45lb iron plates for breakfast LIVE for that awesome "pumped up" feeling you get after an intense set of bicep curls, right? That muscle "pump" is the result of a naturally occurring molecule, nitric oxide (abbreviated "NO"), that dilates blood vessels, increasing blood flow throughout your body. Bottom line... ...the more nitric oxide you have in your body, the more of a "pump" you'll get from your curls, flyes, presses, etc.