1. Mutton. If you eat watermelon after eating mutton, it will seriously damage your body's vitality. Mutton is sweet and hot in nature, while watermelon is cold in nature. Eating the two together will produce a mutually incompatible reaction.

2. Fried food. If watermelon and fried food are eaten together, it can cause diarrhea.

3. Shrimp. Watermelon is of cold nature, and shrimp is also of cold nature. Eating them together will irritate the gastrointestinal tract, which may also cause abdominal pain and diarrhea.

4. Mangosteen. Although watermelon clears away heat and relieves heat, it is cool in nature and must be eaten sparingly, especially not eaten together with mangosteen, as this can easily damage our spleen and stomach.

5. Mung beans. Watermelon and mung beans are both cold foods. Eating them together can easily cause gastrointestinal discomfort and, in severe cases, food poisoning.