Why do you always feel cold in your hands and feet, but not in your body?

People in this situation are prone to peripheral vasospasm. When they encounter cold air or cold water, the blood vessels in their hands and feet contract, the blood circulation is not smooth, and their hands and feet are easy to get cold and purple. In addition, it may also be because the sympathetic nerve function is not good, which leads to the inability to tighten muscles and produce heat and cold resistance when it is cold.

The human body temperature is kept between 36 and 37 degrees Celsius. When human skin comes into contact with external temperature, it will be directly transmitted to the life center of the brain, which controls breathing, heartbeat and body temperature. When the weather is hot, the body temperature control center will dominate the excitement of sympathetic nerves, making the skin capillaries and sweat pores open to dissipate heat and sweat; When you feel cold, sympathetic nerves will cause shivering in all parts of limbs, including muscles near the jaw, which will make muscles and fat cells generate heat energy due to contraction and resist the chill. This is why people will tremble when they feel cold.

Long-term smokers, due to lack of oxygen in the body, are prone to poor circulation of peripheral capillaries. When the poor circulation is arterial capillaries, they are prone to chills. However, if the venous microvessels are not unobstructed, although there is no feeling of being particularly afraid of cold, the blood vessels cannot expand and the blood cannot circulate, resulting in local hypoxia, and hands and feet are prone to chills.

Usually, urban "lazy people" who "can lie down and don't sit, but can sit and don't stand" will also have the problem of not being cold-tolerant because of the decrease of basal metabolic rate.

Women are afraid of cold, make up some iron.

Generally speaking, women are more afraid of the cold than men. Not long ago, two experts from an American institute of human health conducted a group experiment on female volunteers. The experimental report found that people with low cold tolerance have obviously insufficient iron content in their blood. The main cause of iron deficiency in women is menstruation, which leads to a large loss of iron.

As we all know, iron is an important raw material for producing hemoglobin, which is the main functional substance in red blood cells and is responsible for the transportation and metabolism of oxygen in the body. Iodine and tyrosine are the main raw materials for making thyroxine. Iodine needs to be continuously ingested from food, while tyrosine is generally synthesized by itself in the body. Long-term iodine deficiency will affect the synthesis of thyroxine and reduce the body's ability to keep out the cold.

How can I warm my hands and feet?

● Soaking hands and feet locally with hot water before going to bed can not only promote the circulation of vascular endings, but also help sleep.

● After bathing or soaking in hot water, put on socks to keep warm immediately after drying.

● If women are often afraid of cold feet in winter, they can put hot water, rice wine and ginger slices in a bucket (the ratio of hot water to rice wine is 1: 1). Watching TV or getting off work in winter helps to improve women's fear of cold.

Exercise is not afraid of the cold.

When the weather is cold, if you eat more and exercise less, it is easy to accumulate excess fat in your body. At this time, you can do more exercise, which can not only consume excess fat, but also strengthen blood circulation and warm your body.