Protein is essential for muscle growth and recovery. Protein requirements for athletic people are higher than the average person. Whey Protein is derived from milk and is a natural byproduct of the cheese making process. It is also the highest quality protein available and comes mainly in two forms: Whey Protein Isolate and Whey Protein Concentrate.
Whey Protein Isolate is the purest form of Whey Protein available and has a biologic value (how readily the broken down protein can be used) of 154. Whey Isolate contains between 90 to 95% pure protein and contains very little fat or lactose.
Whey Protein Concentrate however, has a lower percentage of pure protein and a slightly higher percentage of fat and lactose.
Whey Protein is generally a great supplement to take between meals. Since the body goes into a catabolic state and burns muscle while it sleeps, it is widely recommended to drink a protein drink soon after waking up.