My brother recommended whey protein to build up muscle, and as a good before and after shake for exercise, should I go for it?

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My brother recommended whey protein to build up muscle, and as a good before and after shake for exercise, should I go for it?
Protein not important? think again!
Protein is second to only water as the most abundant nutrient in the human body. All living tissue is made of 22 amino acids, amino acids that are only present in protein.
The amino acids into which proteins are broken down to maintain the health of skin, mouth, eyes, hair; stabilizes appetite; necessary for carbohydrate metabolism; weight control, essential for normal functioning of the heart, nerve tissues, muscles, digestion, learning capacity, replacement of old cells and growth.
These amino acids work to repair muscle tissues and structures that are damaged during life and exercise. Cellular waste if not destroyed causes a bevy of ailments/disease and hinder the bodies metabolic processes.
Waste is escorted by BCAA's (branch chain amino acids found in protein) during immune function, and is later destroyed by antibodies created in the body. Human beings must consume 9 essential amino acids in order to survive. They must be consumed in your diet as they cannot be produced in the body. The remaining 13 are produced in the human body.
You must eat the right protein sources to gain the proper nutrition. Complete proteins contain all 9 of the essential amino acids.
Incomplete proteins come from "plant products", beans, rice, etc. They must be combined in order to supply the body with the 9 essential amino acids it needs. Ladies and gentlemen, now that you see how important consuming protein is let's look at how much should be consume and what types.
The world health organization and many national health agencies have independently conducted studies, which (even though they differ slightly) all conclude our daily protein requirement should be between 10% to 15% of our daily caloric intake. If you eat 2000 calories a day that equates to 50 to 75 grams of protein.
Protein needs of individuals vary in nature. To estimate your personal protein needs you will need to take your current weight in pounds, divide it in half and then subtract 10. The result is a rough estimate of how much protein you should consume.