👉 Muscle fluid, also known as synovial fluid, is a vital component of the joint system, acting as a lubricant and shock absorber. Produced primarily by the synovial membrane lining the joints, this viscous fluid fills the joint cavity, reducing friction between the articular cartilage surfaces during movement. It also nourishes the cartilage by supplying essential nutrients and removing metabolic waste products, thereby maintaining joint health and function. The fluid's unique composition, rich in hyaluronic acid, helps maintain joint flexibility and resilience, playing a crucial role in the smooth operation of our musculoskeletal system.