Because the primary constituent of all body fluids is … not coffee, not tea, not any other fluid, but water. Most individuals don’t know that all beverages —except water—contain dehydrating agents and that only the purest water optimally hydrates the body. Approximately 70% of your body is water and is responsible for so many important functions within the human body. With so much in stake, doesn’t it make sense to put high quality water into your body?