Hello, friend
Personally, I think you should try to avoid eating watermelon when eating crabs.
Otherwise, it will lead to weakness of the spleen and stomach, and even induce gastroenteritis.
Crab is a cold seafood,
Watermelon is a cold fruit,
Eat these two cold foods together ,
It will aggravate the deficiency and coldness of the spleen and stomach. For people who already have a weak spleen and stomach, eating these two foods together will aggravate the symptoms of spleen and stomach deficiency.
It is not good for the body, thank you.