If your apples are small, about five are only a catty, and each apple is about100g, then the total calories are about 50 calories. Apple is known as "living water" because of its high solubility and easy absorption by human body. It is beneficial to dissolve sulfur and make skin smooth and tender.
Apples contain more potassium, which can combine with the excess sodium salt in human body and make it excreted. When the human body ingests too much sodium salt, eating some apples is beneficial to balance the electrolyte in the body. The elements such as phosphorus and iron contained in apples are easily absorbed by the intestinal wall, and have the functions of nourishing the brain, calming the mind and sleeping.
Extended data
Low calorie food:
Vegetables: asparagus, broccoli, Chinese cabbage, radish, celery, cucumber, onion and tomato.
Fruits: apples, grapes, lemons, mangoes, oranges, pineapples, strawberries, almonds, bananas, cherries, cranberries, grapefruit, guava, kiwi, lychee, papaya, etc.
Nuts: Brazil nuts, chestnuts, coconuts, macadamia nuts, peanuts, pinecones, walnuts, etc.
Reference materials? Baidu Encyclopedia-Calories