Ankle is an important point of blood circulation in the foot. If the socks are tight and suitable, the venous blood can flow back to the heart smoothly through the ankle. If the socks are too tight, the venous blood that should flow back to the heart will be blocked near the ankle, which will aggravate the burden of the heart and even cause hypertension for a long time. People often feel cold feet, possibly because the socks are too tight, which is caused by the lack of timely access of arterial blood to the foot, resulting in a reduction in local metabolism of the foot. In addition, the socks mouth is too tight, will also lead to the foot skin cuticle thickening, become rough, dry, over time will induce corns, footpads and so on.

Old and middle-aged friends should pay more attention, because this group of people often have different degrees of hyperlipidemia, arteriosclerosis, socks on the ankle local pressure often leads to increased blood pressure, serious or even lead to heart disease. Diabetic patients often have poor blood circulation in lower limbs and feet to varying degrees. Overtightening socks is just like "worsening the snow". It is easy to induce or aggravate diabetic foot.

Therefore, when we choose socks, we should not only pay attention to the texture and size, but also to the tightness of the socks. If the socks have been bought back are too tight, you may as well use a steam iron to quickly "gain weight" to the socks. Specific practice is: first use a soft ruler to measure the circumference of the ankle, then find a discarded cardboard box with a moderate width, and prop up the sock mouth. According to the quality of the socks, set the temperature of the electric iron, and gently ironed at the socks on both sides, so that the sock mouth that was too tight can be relaxed a lot.