From the perspective of nutritional balance: an apple a day can meet your daily vitamin needs.

From the beauty point of view: the staple food can be apples, tomatoes and lettuce, and one is enough.

From the point of personal preference: if you like apples, you can eat more without affecting your health; If you don't like it, it's always good to eat one.

People with weak lungs, cold stomach and diarrhea are not suitable for eating carambola.