Synergy. Nutrients are co-dependant on other nutrients to exert function within the body. They function only by interdependent interactions with each other. Completeness. The corollary of synergy is that even if one essential nutrient is in short supply, none of the others can function properly. Biochemical Individuality. Nutritional needs of individuals differ as much as their faces and fingerprints. Each person requires an individual nutrition program Lifestyle Dynamics. Lifestyle choices such as the choice of training level, or the choice of living in a polluted urban area, dramatically affect nutritional needs. Precision. There is only a narrow range of intake of each nutrient that will produce the optimum function. Physiological Dynamics. Improved nutrition must wait on nature to renew whole bodily systems before its effects can show.