Your body is comprised of roughly 60% water. Every single cell in your body requires water to function properly. If you lose even just 1% of the water in your body—the tipping point for mild dehydration—your energy levels, cognitive function, and mood all drop. Drinking water and restoring electrolytes serves a wide range of purposes in our bodies including maintaining a healthy immune system and digestive system, controlling body temperature, heart rate, and blood pressure, and maintaining a healthy metabolism.