1 What are the disadvantages of eating grapes at night Grapes are rich in water and glucose and other nutrients, the night's activity is relatively small, the metabolic rate is also relatively slow, which may lead to the energy can not be consumed, will be converted into fat accumulation in the body, thus causing obesity; and too much grapes at night will lead to an increase in the nocturnal urination, the number of times you get up at night increases, which may affect the quality of sleep. 2 grapes a day to eat how many suitable grapes a day to eat 20 or so. Grapes are rich in nutrients, such as vitamins, sugars, water, minerals, etc., eat 20 or so a day can add a lot of nutrients for the human body, if you eat too much may add to the body's caloric burden, but also may stimulate the gastrointestinal tract, so grapes, although good, don't eat too much, so as not to give the body to cause unnecessary burden. 3 grapes bad eat what will happen grapes bad if you eat very little, generally speaking, there will be no discomfort, but if you eat more bad grapes, grapes have more bacteria, consumption may destroy the normal flora in the intestinal tract, which is the human body abdominal pain, diarrhea, nausea, vomiting and other symptoms, if the symptoms have been unrelieved, it is recommended to go to the hospital for symptomatic treatment. In general, bad grapes can not eat, especially for some people with poor gastrointestinal function, is likely to cause discomfort. 4 Eat grapes benefits and efficacy of spleen and stomach Grapes are not only delicious, but also has a high nutritional value, ripe berries are rich in glucose and fruit acids, fruit acids help digestion, eat some grapes in moderation have a certain role of spleen and stomach. Relieve fatigue Grapes are rich in minerals, such as calcium, potassium, phosphorus, iron, and a variety of vitamins, such as vitamin C, vitamin B1, B2, vitamin P, etc., as well as a variety of essential amino acids, neurasthenia, fatigue has a certain role in relieving. Protect the heart Grapes also help to reduce human serum cholesterol levels, reduce platelet cohesion, which flavonoids can also clean the blood, the heart has a certain protective effect.