I mean absolutely no offense Swish, please don't take any, because I know how difficult is to sift through all the mis- and disinformation out there, but you definitely have some seriously wrong ideas about protein. I wouldn't want others to read your posts and then start thinking the same things.
Whey protein is not catabolic. That is simply impossible. Also, recently the fitness industry has gotten everybody panicking about 'catabolism' in order to sell more protein. First of all, the body is constantly breaking down and rebuilding proteins. The body likes to stay in the same state (there is a nice word for that, but the longer I stay in Japan, the more I forget my English), so the net result at the end of the day is usually zero. The key to building muscles mass is to increase the protein synthesis so that at the end of the day, there is a positive net result of the breakdown/synthesis ratio. Two things are required---a stressor to stimulate protein synthesis (weight training) and the surplus energy to fuel the process (food). If you really want to gain muscle, just consuming a bunch of extra protein isn't really going to help. The body needs the raw material (aminos) plus the extra energy required to use the raw materials to make a finished product. Protein synthesis is a very energy-demanding activity, so the body has to really be forced to do it. Your total calories must be quite a bit over your daily caloric needs to create the hormonal environment so the body will feel comfortable wasting so much energy on such a trivial thing (to put it simply).
By the same token, catabolism is not such a simple thing to get yourself into. The body has evolved over millions of years to survive on infrequent eating. This adaption is the very reason why everyone is so fat now. First of all catabolism DOES NOT EQUAL breaking down skeletal muscle for energy. Breaking down skeletal muscle for energy is one of the body's last resorts actually. As stated, the body is constantly 'catabolizing' and 'anabolizing', and the body has adapted to surviving very well on infrequent eating, so your tiny little fast every night while you sleep is going to cause you to 'catabolize yourself' with as much possibility as a flea has of picking you up and piledriving you into the pavement. This is ESPECIALLY so when you are eating at or above maintenance and have been long enough to change your hormonal profile so that the body is happy to synthesize protein and store fat into fat cells.
Even with dieting, it is nothing to worry about. You can even go an extreme diet of only protein and some vegetables (for nutrition, not calories). Not only have you nearly completely cut out carbs and fat, your total daily calories are extremely low, thousands of calories lower than your daily needs. However, even in this extreme case, just the presence of an abundunt supply of aminos in your blood will prevent your body from breaking down skeletal muscle for energy, until fat stores become extremely low (although what the body thinks is extremely low does depend on genetics, everybody has their own 'set points'), which could take weeks or even months depending on how fat you were when you started. If you also combine this with weight training even only once a week to provide protein synthesis stimulus, you are practically guaranteed not to lose any skeletal muscle (ok, maybe a couple grams here and there). Actually, the problem with this kind of diet is not the "inevitable catabolism", but the extreme hormonal state your body will be in. This hormonal state will be the reason you have to quit the diet before you have lost all the fat you wanted, NOT because of the dreaded skeletal muscle loss. I actually have done this diet several times myself. You would be surprised at how capable you still are even in such a state. Yes, you do lose some strength, but this is only because you have no 'easy energy' glycogen in the muscles and blood. This also seems to cause a problem with proper neuromuscular transmissions, but the body always adapts and you can (or at least I did) nearly return to pre-diet strength levels by the end of the diet (which was always pretty short term for me because I was fairly low-bodyfat to begin with). You can read my Training Log if you are interested, although I only have the last one I did documented. If you are interested, www.barbellpurist.com
But anyway, the bottom line is the protein industry has really gotten everybody buying into this catabolism crap, and it is something you absolutely do not need to be concerned with. If you are dieting, limiting carbs, weight training, and getting enough protein THROUGHOUT THE DAY are the key points. If you are gaining, again, meeting your DAILY caloric goals are the key points, which can be harder than dieting for some people, constantly eating 1000 calories a day more than your body needs or wants can get difficult! If you normally go to bed at 12, but you have already made your daily caloric target by 6 pm, you don't need to drink some special concoction before going to sleep to prevent the catabolism boogeyman from haunting you!