Grandma's words: We shouldn't drink standing water, why does Grandma tell us that?

Grandma's words: Drinking water is an important part of life. Water keeps you hydrated and reduces the risk of many illnesses. That is why health experts also recommend drinking enough water. But as important as drinking water is, it is also important to drink it properly. That is why the elders of the house always tell us the correct way to drink water. If our grandmothers see us standing and drinking water, they immediately stop us and tell us…