Eating an apple every night can replenish the body’s required carbohydrates and other nutrients, so it is good to eat an apple at night. Apples are plants of the genus Apple in the subfamily Apple of the family Rosaceae, and the fruit of apples is rich in minerals and vitamins and other nutrients needed by the human body, such as 119 milligrams of potassium, 12 milligrams of phosphorus, and 16.2 micrograms of vitamin A per 100 grams. Apples also contain apple phenol, easy to dissolve in water, easy to be absorbed by the human body, but the night before going to bed is not recommended to eat a lot of apples, so as not to apple rich in fruit acids, tannins lead to abdominal pain or diarrhea occurs. Note that patients with ulcerative colitis should not eat apples during acute attacks, due to the thinning of the intestinal wall ulcers, apple texture is hard, plus contains crude fiber and organic acid stimulation, is not conducive to the healing of the ulcerated surface of the intestinal wall.