How should we adjust our diet for health preservation in spring? What things are not suitable to eat too much? According to Zhang Wuben's theory of eating for health, the main function of Cordyceps sinensis is to enhance human immunity, nourish the lungs and kidneys, and replenish vital energy. It has a slightly warm nature, and can generally be taken all year round. However, as the weather gets warmer, healthy people can slightly reduce the dosage.