It is a well-known fact that water is a necessity for human life, along with food. But how long can your body last without water? The answer isn’t a simple one; it depends on the environment and the health of the person.
According to Scientific American, someone who isliving in a comfortable environment can live up to a week without water. That is certainly not recommended though!
However, this time lessens in environments that are hard on the body and lead to things can cause water to leave, such as sweating. Someone in a very hot environment who is sweating profusely might only last a couple of hours without water.