You can turn to protein powders or bars as a convenient source of protein, but they do not provide a BIOLOGICAL advantage over real food (regardless of what the supplement pushers claim). If you concentrate on proper combinations of complete protein foods (eggs, dairy, meat, fish), you need not consume whey protein supplements (or any other such products), as they are simply overpriced, processed versions of what natural, relatively inexpensive sources offer. Use milk, egg, or whey protein supplements for portability or convenience ONLY, always realizing that they are not in any way MORE effective than meat, dairy, fish or eggs. They are an acceptable source, though, so if you find protein powders or bars more convenient during busy times, you can integrate them into your diet (I recommend 100% egg protein powder WITHOUT artificial sweeteners, as this is likely the healthiest choice in terms of powders). On the other hand, if you have the ability to consume real food as your sole protein source (which is possible when choosing the proper items), you will not only fare equally well, but also save quite a bit of $$.

Remember, muscle mass results from PROPER training/diet, and NO supposed band-aid (such as protein supplementation) is a valid substitute.

I have achieved tremendous success (over 60 pounds of muscle), and will show you how to improve your body through proper diet and exercise techniques.