<s>[INST] I have heard that the habit of drinking water and its full benefits were known from ancient times in places such as Egypt, Greece, and Rome. So, in the age of modern technology and advancements, we would think that the knowledge becomes more refined and easy to access. For example:

1.  How can we determine if we are drinking enough water?
2.  What are the benefits of drinking water?

First of all, let's see how ancient civilizations determined their proper amounts of water intake. Before the modern methods to determine water intake and the importance of its benefits, people used some creative yet effective methods. Let's take a look from the perspective of our ancestors.[/INST]