Water powers nearly every process in the bodyfrom mood and muscle function to metabolism and clear, healthy skin. Drinking enough each day helps flush out waste, keeps your joints comfortable, and supports Cartilage is 85 percent water. Water keeps the cartilage around our joints hydrated and supple, ensuring that our joints stay lubricated. It also protects our spinal cord and tissues, keeping us healthy The Importance of Hydration for Joint Health: How Much Water Should You Really Be Drinking? Dr. Nawaid Ahmed Hydration and Performance: Why Fluid Intake Matters