Potatoes and beef are high-protein, high-sugar food, containing high calories, often eat easy to lead to fat, fiber content is less, less easy to digest;

Potatoes and beef at the same time into the stomach, the two should be digested at the same time, but the digestion of potatoes and beef need different concentrations of gastric acid, the two foods at the same time to the stomach, the stomach can not be digested at the same time, increase the stomach's digestive time, to the stomach unnecessary digestive burden.