A balanced diet should contain sufficient quantities ofProtein, carbohydrates, fat, vitamins and minerals, toEnsure human growth, health, alertness, activity and reproduction. An adult needs 1 mg of protein for every kilogram of body weight, i.e. a person weighing 60 kg needs 60 g of protein daily, while a child needs 2 g of protein per kilogram of body weight, because he is still growing. If the human body is healthy, the excess consumption of proteins forces the liver and kidneys to make an extra effort. Therefore,the food content during the day should be distributed as follows:60% carbohydrates,15% protein and25% fat.It is obvious that fullness of the stomach in humans is harmful.It is harmful to the respiratory and circulatory systems and hinders digestion because the distension of the gastric wall hampers its muscular activity. In order to have normal breathing, one third of the stomach must be empty.