Dehydration: Balancing Water and Electrolytes Hughston Clinic Why is Drinking Water Important and How Much Water Should You Drink? 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 Health Benefits of Water Counseling and Wellness Center of Pittsburgh, Marriage Counseling, Therapy, and Family Counseling in Pittsburgh, Monroeville, Wexford, and South Hills. How does water help lubricate joints and reduce friction?