I can't say that I've noticed any gains that I feel are directly related to it, however, I simply like the way it makes me look. The "pumps" tend, for me anyway, to make me look bigger and leaner. Also, on this, I notice that my body fat appears to be lower. It was a thread here some time back and it was stated by several that this was best described as a vanity supplement, with which I agree. However, the ones that are making gains, whether NO2 related or not, congratulations.