SEVENTY-ONE per cent of Earth is water, so is 50-65 per cent of the human body. Some sources say 70 per cent. Without the precious liquid, human life would be impossible. Unbeknownst to many, our bodies perform less than optimally when it is water-deprived.Is consuming water on your daily to-do list, especially in a sugar-crazed market of artificial drinks?�It aids digestion