How to Lubricate Your Joints Previnex Why Water Is Important For Joint Pain Dehydration 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 Water improves joint movement! Think of synovial fluid in joints like oil in an engine. Having a sufficient amount of oil and of good quality will help the engine Dehydration and Joint Pain: How Your Hydration is Affecting Joint Health Orthopedic Associates How does water help lubricate joints and reduce friction?