The human body is made up of mostly water
The human body is made up of many substances. However, the most predominant one is water. Yes, it is hard to imagine that something as solid as a human being can be made up mostly of a liquid, but that is because we use it to carry out several key bodily functions.
Water can make up between 60% and 70% of our bodies. That is why we need to consume quite a bit to stay healthy. An adult male needs around 3.2 quarts of water a day, while adult women require about 2.3 quarts. Proper hydration levels are essential for waste disposal and cellular function, among others.