The video shows the one-way vein valves in action. When the muscle is squeezed, blood is pushed forward, then the valve shuts preventing the backwards flow of blood. Our bodies were designed for us to move. Walking and moving our calf muscle is the primary reason blood moves in our veins. Sometimes the calf muscle is called the accessory heart.
When these leg vein valves begin to fail, varicose veins, spider veins, leg swelling, skin discoloration and many other symptoms of venous insufficiency occur. To keep your leg veins healthy remember to move. We should not sit or stand for long periods of time. Contracting that calf muscle is necessary for blood movement in the leg veins.