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Protein is one of the four main areas of nutrition, the others being carbohydrates, fats and micronutrients. To understand protein, it is helpful to know some basic nutritional science. Protein is made up of amino acids [1]; there are 22 normal amino acids and 8 of them are called 'essential' because they have to be eaten as the body cannot produce them from other foods [2]. A food can be described as 'complete' if it contains a balance of the essential amino acids. Complete proteins are generally from animal sources - dairy and meat. However, you don't need to get all the amino acids from the same food to get a complete protein. Simply having beans and cereals in the diet will create the balance needed. (They don't need to be eaten in the same meal [4])
The human body as no 'store' of protein other than your muscles. There is some interesting research that indicates that having amino acids available as quickly as possible after training will improve muscle synthesis (and therefore recovery). The ideal approach seems to be to take raw amino acids, either before or after training [11]. as they are available more quickly than protein, but this is more expensive than protein. Whey protein is more easily digested (two hours) than other forms of protein, so this is the next best approach. Taking protein before exercise is best, but I for one can't tolerate much protein when running. Taking protein with fast carbohydrate (high [[Glycemic Index]]) can create an insulin spike that also helps muscle synthesis. So taking some Whey protein in Gatorade immediately after running should help recovery and muscle building. [5, 6]
There is also debate over taking protein before sleeping. Most repair and recovery occurs at night, so having an adequate supply of protein seems like a good idea, but there are suggestions that it may interfere with sleep. There is also indications that while the essential amino acid tryptophan is vital for sleep, many sources of protein lack sufficient quantities [10]. Personally, I find that a scoop of protein in a glass of milk seems to help me sleep.
I take [http://go.fellrnr.com?id=35454X937677&xs=1&xcust=ProteinONW&url=http%3A%2F%2Fwww.amazon.com%2Fgp%2Fproduct%2FB000QSNYGI Optimum Nutrition's Gold Standard 100% Whey], as it dissolves easily, is reasonably priced and seems to be good quality. The vanilla flavor tastes great mixed with Gatorade, or with milk and cocoa powder. See also [[Protein Powder Contamination]]. [http://www.bulknutrition.com/p62_100__Whey_Protein_-_Gold_Standard_Optimum_Nutrition.html. http://www.bulknutrition.com/p62_100__Whey_Protein_-_Gold_Standard_Optimum_Nutrition.html.]They also have bulk amino acids for instance - [http://www.bulknutrition.com/?products_id=1511 http://www.bulknutrition.com/?products_id=1511]
[1]Protein
