Joint movement depends on synovial fluid, a slippery liquid that reduces friction and nourishes cartilage. This fluid is constantly renewed through joint movement and adequate water availability. When hydration is reduced, synovial Experimental Investigations of Biological Lubrication at the Nanoscale: The Cases of Synovial Joints and the Oral Cavity Stay hydrated to keep your joints happy and healthy! Proper hydration lubricates and cushions your joints, reducing pain and improving mobility. Keep sipping water for better joint health! #StayActive #stayhydrated #drinkwater #JointHealthMatters # Synovial Fluid Definition, Location & Function Lesson Study.com