Below is an introduction to protein and amino acids. It is very easy to get protein in our diet, in fact, most Americans consume 2-3 times more protein than necessary. Excess protein does not create muscle, as many hope, but is stored as fat.
Excess protein can put strain on the liver and kidneys.
There is a general misunderstanding about the protein needs of athletes. Many believe that large quantities of protein foods are necessary to enhance muscle growth. Amino acid supplementation is not necessary even for body builders. Training techniques and genetics are the critical determinants of muscle size. Protein can't be stored for later use, if the athletes body gets more protein than it needs, extra is broken down and stored as fat or used as energy.