Avoid fruit juice because it is rich in calories and free of dietary fiber. That Rapid Fast Keto Boost Review each cup of juice, including grapefruit juice, containing an average of 100 calories, while containing one serving of fruit ( apples) to 50 calories only. Replace white rice by whole grains such as bulgur wheat, paddy rice, pasta made from whole wheat because it contributes to the feeling of satiety because it contains a high level of dietary fiber. Replace the white bread by bread made from flour, both types of bread contain the same rate of calories, but that the high level of dietary fiber in bread made from whole wheat flour contributes to a feeling of fullness and protect against constipation.