Without oxygen we cannot live more than few minutes. Lack of oxygen lead to permanent brain changes, and even death. We breath with oxygen, and for proper gas exchange responsible is respiratory system. Thanks to this system we gather oxygen and expel harmful carbon dioxide, but it is only one of its functions. Respiratory tract is one of the first barriers to pollution wanting to be inhalated. Unfortunately, we live in age of very polluted air and that makes our respiratory system more exposed to infections and diseases.

Take care of your respiratory system everyday!.
Instatly stop smoking. That is a reason of 90% cases of deathly lungs cancer. Avoid walking near crowded streets, to protect yourself against fumes inhalation. Inhalation should be taken by nose which cleans and waters air, and exhaust should be done through mouth. Take care of places you are in. Clean the dust, make them properly moisturized and try to keep them fresh aired to increase the amount of oxygen. If you’re allergic, avoid contact with allergens.