Reduced muscle size and strength is a typical symptom of training too hard without enough protein as extra protein is needed to compensate for protein breakdown. The 20 amino acids are the building blocks of proteins. They can be combined in various ways to form hundreds of different proteins in the body. Protein makes up the structure of all cells and tissues in the body, including muscle tissue, internal organs, tendons, skin, hair and nails. 12 of the amino acids can be made in the body so are referred to as non-essential amino acids, whilst the other 8 are known as essential amino acids as they must be supplied in the diet. Liquid Aminos is in a convenient liquid form, which may be favoured by those looking for faster absorption, or individuals who are unable to swallow capsules or tablets.