winter During sleep, people are prone to catch a cold and cause a stroke because of their reduced physical resistance and adaptability to cold environment. Wearing pajamas can prevent diseases and protect health. Because pajamas are loose and fat. It is conducive to muscle relaxation and blood discharge from the heart, and can make people get full rest.
It is advisable to wear pajamas freely. Because pajamas are in direct contact with the skin, it is not advisable to wear chemical fiber products. Its fabric is natural fabric, such as cotton cloth, knitted fabric and soft silk material, which has good air permeability and hygroscopicity.
It seems easy to wear clothes to keep warm. Actually, it is not. We know that when people put on clothes, they are in an air layer with a temperature higher than room temperature and a smaller change than room temperature. Clothes can not reduce the heat loss of the human body, nor can they preserve the heat in the human body. Clothes only create a layer of warm air around the body, which temporarily slows down the heat from the body. According to the measurement, after putting on clothes, the human body can save one third of all the heat emitted by conduction and radiation on average. Therefore, in the cold winter, it is of great significance to pay attention to the warmth of clothes for reducing the heat emission of the human body and keeping warm from the cold.
Winter is characterized by cold, especially in the north. Although the temperature in the south is not low, the cold temperature is uncertain. It is as cold indoors and outdoors, often rainy and foggy, and the air is humid, so we have long developed clothes to keep out the cold. Especially for the elderly, their physique is generally poor, and their mobility and cold resistance are weakened. Most elderly people will feel unbearable cold in winter, so keeping warm has become a top priority. Wearing slightly thinner clothes is easy to catch a cold and lead to other diseases. Therefore, the first principle for the elderly to choose winter clothes is to pay attention to the cold-proof and warm-keeping functions. It is also important for the elderly to have muscular atrophy, fatigue, flexibility and easy putting on and off. Patients with arthritis and rheumatism can use cotton or fur to thicken the joints near the shoulder blades and knees. People suffering from tracheitis, asthma and gastric ulcer had better add a dog skin vest. Dog skin keeps warm better than sheepskin, which helps to protect the heart, lungs and stomach from cold.