Hydrate or Die: Drink Water, then Drink More Water, and Drink Water. Your body depends on water to survive. Every cell, tissue, and organ in your body needs water to work properly. For example, your body uses water to maintain its temperature, remove waste, and lubricate your joints. Water is needed for overall good health. You should drink water every day. Most people have been told they should drink 6 to 8, 8-ounce glasses of water each day. That’s a reasonable goal. However, different people need different amounts of water to stay hydrated. Most healthy people can stay well hydrated by drinking water and other fluids whenever they feel thirsty. If you’re feeling thirsty, you may already be dehydrated.... Don't let that happen!