The body is always in constant state of instability although it may appear to be quite solid. The body protein is being turned over as old cells die and new cells replace them. Bodybuilders are infamous of their love for protein. They put so much emphasis on protein as this is the construction material for the human body that is for muscle building. Skin, hair, connective tissue, bones and skeletal muscle are made form protein. Protein is the most abundant substance in the body next to water, making up approximately 15 to 20%of the person’s weight. A bodybuilder has the most interest to the fact that 70% of all the protein in the body is located in the skeletal muscles. Consuming more protein every day than the body utilizes provides the growth of muscles to occur.

The medical body building diet supply of protein, like fats and carbohydrates are also composed of hydrogen, carbon and oxygen. It is the only food nutrient that can bring nitrogen into the body. Greater intake of medical body building diet supply of nitrogen than exerted means that protein is being retained and new muscle is being synthesized, known as positive nitrogen balance. The more nitrogen exerted means that protein is broken down and muscle is being lost which is known as negative nitrogen balance.

Complete proteins are the foods in the medical body building diet supply that contain balanced combination of all essential and nonessential amino acids in the exact amounts required by the body for growth. All the essential amino acids, which are the building blocks of protein, must be available all together for the body to produce muscle. Short supply of non-essential amino acids can be produced by the liver. The body must break down its own protein if the essential amino acids are missing. The dietary protein must supply all the essential amino acids to prevent the breaking down of muscle cells.

Medical body building diet supply of carbohydrates has glycogen which is the storage depot in the body. Glycogen can be stored in the muscles and then drawn upon hours, even days later when needed. Proteins cannot be stored in the body, significantly requiring the complete proteins must be eaten in every meal in order to maintain the optimal environment for muscle growth. This medical body building diet supply therefore explains the common practice among bodybuilders to eat six protein-containing meals per day. Complete proteins come from medical body building diet supply including eggs, meat and dairy products. However, there is an obvious problem with animal proteins because they contain large amount of saturated fat. Medical body building diet supply fats must always be taken in low diet. Other medical body building diet supply that could be best sources of lean protein for bodybuilding purposes are fish, shellfish, egg whites, chicken breast, turkey breast, lean red meats, nonfat or low fat dairy products and protein powders.