Fascia is a connective tissue that surrounds and supports muscles, organs, and other structures throughout the body. It forms a continuous network, providing both structure and flexibility and plays a crucial role in maintaining the integrity of bodily systems. Fascia can be found in various forms, from thin membranes to thicker layers, and is involved in movement and posture by helping to transmit forces between muscles and bones. Additionally, it contains nerves and blood vessels, making it essential for overall health and mobility.