Because bananas are rich in dietary fiber, they can promote gastrointestinal peristalsis, and drinking bananas and apple juice often can play a role in losing weight. These two kinds of fruits can promote digestion well, help to lose weight, and have a laxative effect, which can discharge excess oil in the body, so the weight loss effect is also better. But pay attention to the dosage, just drink one cup a day, and you can't drink more just to see the weight loss effect.