The benefits of drinking water for joint pain Fluid Lubricates Joints Biological Strategy AskNature Did you know your joints are mostly water? Just like an engine needs oil to run smoothly, your joints need water to stay lubricated. Hydration helps maintain the volume of synovial Most people associate hydration with skin, digestion, or energy levels., But one of the most overlooked systems affected by hydration is your joints., Inside every joint is a specialized lubricant How Dehydration Affects Your Joints