Some people may experience digestive discomfort or bloating. Avoid combining too many fruits, and eat melons and citrus alone. They’re filling and energizing, which may help you fast for longer. However, bananas are not considered as cleansing as other fruits because of their starch content [2]. The first step of the fruit flush is to drink a protein-rich shake every two hours, followed by an 8 oz glass of water (13). The protein shake should be nutritionally dense to help you get all your essential macronutrients. A Simple Fruit Fast Meal Plan As well as aiding digestion and preventing constipation, fiber adds bulk to your diet, a key factor in.