It is generally best not to eat bananas when you are hungry at night. Although bananas are nutritious and contain the cellulose needed by human body, they still contain high calories. If you eat bananas before or during sleep at night, it is likely to cause obesity, and eating bananas on an empty stomach may also cause some adverse consequences of myocardial infarction. Eating bananas when people are hungry will cause a large increase in magnesium in the body, leading to an imbalance of calcium and magnesium in the human body.