Grapes contain the minerals calcium, potassium, phosphorus, iron and a variety of vitamins, etc., is a common fruit rich in nutrients, usually moderate consumption is good for the body, but every night before going to bed to eat grapes, not only no benefit, but also may instead affect health. Eating grapes every night before going to bed will increase the burden on the digestive system, if you eat more or originally have peptic ulcers or gastrointestinal disorders, and may cause nausea, abdominal pain, diarrhea and other discomfort, but easily affect sleep. Grapes also contain more sugar, the body will slow down the metabolism at night, every night before going to bed eating grapes will increase the possibility of obesity. The same is true for other fruits or foods, which in principle are not recommended to be eaten within two hours before bedtime. Eating grapes or other fruits can be done in the morning or afternoon, between meals. Grapes contain a variety of fruit acids rich in fruit acids, which stimulate the secretion of stomach acid. It can promote gastrointestinal motility, which can help digestion to some extent. Grapes also contain anthocyanins and vitamin C, which have some antioxidant effects and are good for the skin. In addition, grapes have a small amount of melatonin, which can help improve the quality of sleep; vitamin B and many minerals in grapes are also good for the body.