The correct exact use for dietary protein to support prolonged endurance activity is widely debated among sportscientists. In any 6 months time period, all muscle cells, all blood cells, all enzymes, and all gene cells are completely replaced. Over half the dry weight of the human body is protein. The solid structures of the body such as skin, nails, bone, hair, ligaments, and tendons are made from the structural class of proteins. If the balance of dietary protein is tipped toward too much or too little, either way, the results are devastating to both training and performance.
Premature fatigue occurs during endurance training.
Heart rate will be high during interval training. Lack of motivation to train will prevail before workouts involving intensity of effort. TOO MUCH Excess Amino Acids are converted to toxic tissue ammonia, which is then deaminated to form urea. Urea is excreted by way of kidneys and sweat glands. Excess Urea in kidneys will cause low back pain.