1.5g protein per lb of bodyweight
Despite what you might hear to the contrary, you NEED protein and possibly protein supplementation to facilitate "optimum" muscle gains.
Ideally, you should have 1g of protein per lb of bodyweight. This is the bare minimum. If you are training, you should take 1.5g per lb. So if you weight, say 150lbs, every day you should take 225g (150 x 1.5) of protein, spaced throughout the day.
If you are a competitive body builder or you just don't want to leave anything to chance and want to get as BIG as possible as QUICKLY as possible, then some people up their protein to as much as 2-2.5g of protein per lb of body weight. This is what we recommend, especially if you are taking products like Norateen Heavyweight II, Norateen II or other muscle builders.
The above muscle builders work BEST with a high intake of protein. They convert more protein to muscle so the more protein, the more muscle you will have!
You can get protein from a variety of meat, milk and egg sources. However, in addition, you should take a strong protein supplement such as LA Whey.