Watermelon can't be eaten on an empty stomach, because watermelon is a very good food for heatstroke prevention and cooling. In Chinese medicine, it is dry and cold. In addition, it also contains a lot of water. After you eat on an empty stomach, you dilute your gastric juice, and after the gastric juice is diluted, the gastric acid will be less, which will easily lead to indigestion, loss of appetite, and easily affect gastrointestinal peristalsis.

In addition, bananas, persimmons, oranges, lychees and sugar cane are not suitable for eating on an empty stomach.