How does water help lubricate joints and reduce friction? 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 Hydration isnt just for beating the heatits essential for joint health, too!, Water helps cushion your joints, supports cartilage, and even reduces inflammation. Dehydration can make stiffness The role of nutrition for healthy joints and cartilage