Hydration Strategies for Athletes: Tips, Myths, and Best Practices for Training Dehydration and Joint Pain: How Your Hydration is Affecting Joint Health Orthopedic Associates Summer heat doesn't just dehydrate your body, it can impact your joints too! When you don't drink enough water, the lubrication in your joints (synovial fluid) can reduce, leading to stiffness, discomfort, 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