One of the more popular supplements to come along in the past five years has been Nitric Oxide (or NO). In fact, I did a post a while back on my experience with one of the more popular NO products on the market: No-Explode. Though I have stopped using this product since (mainly because its very high levels of taurine and caffeine made me a bit jittery), I may try supplementing with the primary active ingredient, which is an amino acid called arginine.

Research out of the Univeristy of North Carolina, Wilmington revealed that arginine can simultaneously help you build muscle while dropping body fat. In their study, fifteen female athletes consumed 6 grams of arginine supplements per day for four weeks. Researchers found that these women lost 2 pounds of body fat while at the same time gained 2 pounds of muscle, all without any change to their diets or exercise programs.

Now, before you rush out to your nearest GNC and pick up some arginine, you may want to first discuss things with your doctor. But, if you've already tried supplementing with this amino acid and would care to discuss your experience with it, we'd love to hear what you have to say.