Healthy bacteria
Drink more yogurt, which contains healthy bacteria, which can correct the imbalance of diet and improve the body's disease resistance.
plain boiled water
Drinking plenty of boiled water can keep nasal cavity and oral mucosa moist, enhance the activity of lactate dehydrogenase in human organs, and improve human disease resistance and immunity.
seafood
Eating more seafood, which is rich in iron, zinc, magnesium, selenium and copper, can promote immune function.