How Long Can You Survive With Just Water

Human survival depends on the consumption of food and water. To function effectively, your body requires energy from food sources and hydration from water. Your body's numerous systems function best when you eat a variety of foods and drink enough water each day.

Water is regarded as an important molecule since it forms around 65% of the body's liquid. Your body will use the water stored in your fat cells to quench your thirst in the same way that it uses water from external sources. 

However, our bodies can also go without water for days at a time. Due to changes in our eating habits, we can go days or even weeks without eating. The body may live for 8 to 21 days without food or water, and up to two months if there is access to enough water intake, according to an article in Archiv Fur Kriminologie.

To clarify, If you're able to drink a sufficient amount of water, you're considerably more likely to be able to endure weeks or even months of starvation. Your body can replenish food and liquids with significantly more of its stored energy. Without adequate fluids, your kidney function will deteriorate within a few days.

Source: Healthline