Being an older, only semi-dedicated lifter, I have gotten amazing results from this product. It is meant to be a post-workout product, not a meal-replacement. Not only did I get better muscle gain, but my skin felt more youthful, and smoothed out noticeably. I don't know why, but other products just didn't do that. (And I have tried them all- muscle milk, eas, you name it.) This product is comprised not of one protein source, but three: Casein, (for a time-released effect all day) whey (for immediate uptake) and soy, (which you need, but not too much because of possible estrogenic effects. But perhaps a little is what worked on the skin issues?) Overall, I have to disagree with an earlier poster about flavor; I love it. Especially the chocolate, which I blend with ice, non-fat milk or almond milk, and half a banana. I look forward to it every day after my morning workout.