With ImuPro, all the foods one is allowed to eat can be used to create an individual diet in a 4-day cycle or rotation. If you eat a certain selection of foods on the first day, you should avoid eating these for the next three days. This helps the body to heal from current IgG food allergies while reducing the possibility of forming new ones. It also ensures that the body gets all the vitamins and minerals one would expect from a varied diet. On the 5th day, the food may be consumed again.