Amino acids are very small biomolecules with an average molecular weight of about 135 daltons. The 20 amino acids that are found within proteins convey a vast array of chemical versatility. Amino acid is a molecule that contains both amine and carboxyl functional groups. Amino acids play central roles both as building blocks of proteins and as intermediates in metabolism. The 20 amino acids that are found within proteins convey a vast array of chemical versatility. Protein substances make up the muscles, tendons, organs, glands, nails, and hair. Growth, repair and maintenance of all cells are dependent upon them. Amino acid side chains can be polar, non-polar, or practically neutral. Polar side chains tend to be present on the surface of a protein where they can interact with the aqueous environment found in cells. On the other hand, non-polar amino acids tend to reside within the center of the protein where they can interact with similar non-polar neighbors. Most amino acids can exist in either of two optical isomers, called D and L. The L-amino acids represent the vast majority of amino acids found in proteins. A soy protein powder and whey protein powder are good options to provide more protein in the diet for better muscle building.

Pro-Tec+ is a broad spectrum combination of essential free form amino acids providing the extra assurance. Protein is one of the most essential nutrients in our body. It has a wide range of physiological functions that are required for achieving optimal physical performance. Protein forms the structural basis of muscle tissue, is a major source of energy for muscle contraction and is also the major component of enzymes in the muscle. Amino acids marketed as ergogenic aids include the branched chain amino acids (BCAA) leucine, isoleucine, and valine. During exercise the liver releases BCAA which are delivered to the muscle. Degradation of muscle protein which also occurs during exercise leads to the production of BCAA within the muscle. Sufficient calories from carbohydrates are needed to fuel the body so that protein is used to build and repair muscle tissue. The body continually breaks down proteins into individual amino acids and then puts the the amino acids back together again in chains to form countless different proteins and enzymes.

Various amino acids supplement can be used either by themselves or together for therapy, for instance glutamine can be used in those who have gastrointestinal damage. Carnitine (L-3 hydroxytrimethylammoniobutanoate) has several roles on the mammalian cellular metabolism. Most people believe if they supplement their diet with certain essential amino acids, the problem is solved, but that is not the case. The alleged non-essential aminos should still be supplemented to ensure an optimal balance. There are about 20 natural amino acids. These can be divided into two basic groups: essential and nonessential. The essential amino acids are those which your body cannot synthesize. Amino acids supplements claim to promote muscle growth, provide energy, aid fat loss and speed up muscle repair. However, there is no evidence to suggest that athletes can achieve more with expensive amino acid supplements than they can by eating a diet with complete proteins, such as meat. Most amino acid supplements are sold as anabolic agents to help in body-building; arginine and ornithine, for example, are frequently promoted as ?natural steroids'.