Fascial Release?

What is Fascia and why does it need releasing?
Linda: "Fascia is a connective tissue that is found throughout the body. It is a very thin membrane that surrounds and separates the muscles into bundles and muscle groups."

"The relationship of muscle to fascia could be considered similar to something inside a container. Let's use an analogy of water inside a balloon or glass. Both the balloon and water have the ability to move and change shapes, but the balloon can contain the water thereby dictates the shape of the water. If the balloon becomes rigid like a glass then no matter how much you stir the water, once you stop stirring, the water returns to the shape of its rigid glass container. By releasing the tension in the fascia, and returning it to the texture of the balloon, it allows the muscle to have greater freedom of motion with less stress and tension and therefore less discomfort."