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Be more precise let us understand the anatomy of the veins of the legs and how they work. Leg veins consist of two separate systems, the deep venous system and the superficial venous system. They are responsible for returning blood with waste products in the heart. Blood is pumped or transported through the veins of skeletal muscle Ultimate Muscle Black Edition contraction and gravity. When walking or exercising the legs of the contraction of leg muscles blood through the veins actually move. When we are at rest, the blood in our veins flows only by gravity. Since our legs are lower than our heart blood stops flowing or essence flows back to sleep. To prevent this backflow, the Ultimate Muscle Black Edition veins have one-way valves that prevent this. When these valves do not allow blood to flow backwards and pool in the lower extremities. This causes veins to dilate and develop varicose veins.When blood flow in the veins leg back or stops flowing due to inactivity of waste products and excess fluid from the tissues remain in the leg instead of letting go. This is the reason for tired legs, pain and swelling after long periods of inactivity, such as sitting or standing.

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