It is possible to supply vital nutrients that support immune function by eating a balanced diet rich in fruits, vegetables, whole grains, & lean proteins. Vitamin C-rich foods like bell peppbsky tmsers, oranges, and strawberries can strengthen your immune system and lessen the intensity of your rummy cold symptoms. An additional crucial element in preserving a robust immune system is regular physical activity. Your body will be better able to fight off infections if you engage in physical activity as it can enhance circulation & stimulate the production of immune cells.