After the winter, many students will feel the lower limbs cold, especially from the knees down. River lower extremities cold, the weather is only one of the external reasons, in fact, most people have a lot to do with their own reasons. From a physiological point of view, the lower limbs are the furthest away from the heart, and the blood circulation at the end is relatively poor. Coupled with the calves, feet on the fat accumulation is relatively small, the ability to keep warm is also relatively weak, so the feet of the cold stimulus is particularly sensitive. Therefore, there is a folk saying that “cold starts from the feet”. From their own point of view, the following four common causes of cold lower extremities. 1, peripheral circulatory disorders Because the feet are the furthest away from the heart, so peripheral blood circulation disorders are very common. Chinese medicine believes that the cold feet and human body yang qi insufficient related, “gas for the blood of the handsome”, yang qi insufficient to have enough power to promote the blood in the lower limbs for circulation flow. Therefore, if some students not only feel cold lower extremities in winter, spring and fall days also have cold feet, then it is the peripheral circulation obstacles. This is not a big problem, insist on hot water every day to soak your feet, soak your feet after you can use your hands to rub the heart of your feet, which not only promotes blood circulation in the feet, but also can regulate the balance of yin and yang, improve the condition of the lower extremities cold. 2, lack of exercise After winter, the weather is cold, students’ outdoor activities will be reduced. When there is a lack of exercise, the lower limbs will be cold, which is in fact due to the lack of exercise caused by slowing blood circulation, induced peripheral circulation disorders. According to Chinese medicine, “movement generates yang”, and exercise can generate yang qi. Therefore, for teenagers, winter should also pay attention to appropriate exercise. Of course, the movement to jogging and other aerobic exercise. 3, do not pay attention to lower extremity warmth Now, some girls in order to pay attention to beautiful, fashionable, to wind not temperature, wear boots, short skirts, do not pay attention to leg protection, which is also prone to cause lower extremity cold. Here to remind is that the lower limbs often cold and cold, it is easy to induce arthritis and other diseases, resulting in lifelong pain. 4, lack of calcium, iron and other minerals, as well as some vitamins Many girls due to excessive menstrual blood caused by mild anemia, it is easy to show for the lower extremities cold and other symptoms of blood deficiency. Therefore, if the girl with heavy menstrual flow feels cold in the lower limbs, she can eat more warm food in winter, such as mutton, purple cabbage, liver, carrots, etc., and also eat more mushrooms, spinach, lean meat and other iron-rich foods.