Red fruits and vegetables in late winter have low temperature and are easy to catch a cold. Red fruits and vegetables, such as red pepper and red apple, can make human antibody infected tissues produce a kind of heat energy and raise body temperature. At the same time, the special substance-"anti-cold factor" can directly resist the cold virus and accelerate recovery.

The roots of vegetables, carrots and sweet potatoes contain more zinc and iron, which can enhance the cold resistance of human body.

Chicken soup Winter is the high incidence season of bronchitis, and one of the preventive measures is to drink chicken soup. This is especially beneficial to children. In addition, there is a special substance in chicken soup, which can enhance blood circulation between pharynx and secretion of nasal mucosa, and is of great benefit to keep respiratory tract unobstructed, remove respiratory virus, and relieve symptoms such as cold, stuffy nose, dry throat and cough.

Animal Viscera The liver, kidney, heart and other viscera of animals contain a lot of vitamin B2. In late winter and early spring, the climate is dry, and many people suffer from chapped lips and angular stomatitis, which is caused by the lack of vitamin B2.

Kelp kelp contains a lot of iodine, which contributes to the synthesis of thyroid hormone, and the thyroid source program is known to have thermal effect, so eating kelp in late winter and early spring has a certain cold-proof effect.