The health of the person is the most import assets in life. Majority of the people in this world ignoring this fact knowingly which leads to make them their life cumbersome. The person who is mentally and physically healthy wisely takes the decisions in his life. The health and fitness of body depends upon the nutrition, calories utilization and life style adaptability. The body needs the balance combinations of nutrients and diet should be balanced accordingly. In this study the scientific approach of fit body using the statistical, engineering and psychological methods have been utilized which leads to fit life. The computation of BMI, PFI and UCB with NDS have been done. Rigorous experimentation have been done using different data sets and it gives amazing results by diagnosis fit and unfit and the appropriate plan have been suggested accordingly.

Keywords: Food, Nutrition; Fit body; Nutrients; Discriminant Analysis; BMI; PFI.