Poor blood circulation accelerates the aging of human cells. The functions of the body organs and body systems tend to decline because the blood cannot transport oxygen and nutrients to the cells effectively to ensure the normal function and metabolism of the body. As we age, the debris in the blood vessels accumulate, which can easily form blood clots and block the blood vessels. This can increase the risk of cardiovascular disease and even leads to sudden death. Therefore, maintain a good blood circulation is very important. Daily intake of at least 5 kinds of vegetables from different colours helps to strengthen the blood vessel structure and maintain the elasticity of blood vessels. Varieties of vegetables contain vitamin C, anthocyanins and dietary fiber which cannot be synthesized by the human body, but are high in antioxidant and beneficial for blood vessel health.