To keep our bronchi, lungs and our entire respiratory system healthy, by following these steps we main have healthy respiratory system:It is important to achieve and maintain a healthy weight for respective gender, age and body type.It is required to keep the home clean and changing of the air filters regularly is necessary.Regular exercise can strengthen the heart and lungs.Exposure to the air pollution should be limited.Should avoid smoking.Usage of protective gears like face mask is necessary when a person is exposed to dust, allergens or chemical fumes regularly.By following hand and oral hygiene certain respiratory infections can be prevented.Avoiding crowds during the flu causing season is must.