It is often advised to avoid drinking water immediately after eating watermelon for a few reasons, although these are mostly based on traditional beliefs and anecdotal evidence rather than scientific research.
Some people believe that drinking water after eating watermelon can dilute the stomach's digestive juices, potentially leading to digestive issues such as gas, bloating, or indigestion.
Watermelon is already high in water content (about 92%), so adding more water to your stomach after eating it might cause discomfort or a feeling of fullness.
In some traditional medicinal practices, like Ayurveda, it is suggested that drinking water after consuming fruits can disrupt the digestive process.