The Importance of Hydration: Why Water Is Essential for Your Body, Brain, Energy and Overall Wellbeing Water – The Foundation of Life Water is one of the simplest yet most important elements of human health. We often take it for granted, reaching for a glass only when we feel thirsty. However, hydration is about much more than simply quenching thirst. It plays a fundamental role in almost every process taking place inside the human body. Approximately 50–70% of the adult human body is made up of water. From transporting nutrients and regulating body temperature to supporting digestion, circulation and cellular function, water is essential for maintaining the delicate balance that…