Analysis: Hello, frequent colds are caused by low immunity. Low immunity can lead to frequent colds, and can be treated with transfer factors, which can increase immunity. Usually more exercise exercise, drink more water, eat less spicy food. Disease Analysis: Hello friend, often participate in sports, the number of immune cells will increase, resistance is also relatively increased. Keep optimistic mood optimistic attitude can maintain the human body in an optimal state. Eat more fresh radish, ginseng royal jelly, mushrooms, monkey head mushrooms, straw mushrooms, black fungus, fungus, shiitake mushrooms and so on.