It has something to do with it. Traditional Chinese medicine believes that immunity is all based on healthy qi. The so-called "righteous qi cannot be affected by evil. Where evil gathers, its qi will be deficient." Deficiency of righteousness is the main reason for the decline of immunity, which is related to the spleen, lung and kidney. The relationship is the greatest, and the kidney is the root of vitality. Kidney deficiency means insufficient vitality, leading to deficiency of vitality and insufficient immunity. I don’t know about colds. Elderly people with asthma need to nourish the kidneys. The kidneys are responsible for collecting qi and kidney deficiency often causes asthma