All over the world about 1.3 billion people do smoking. We all know that smoking though it’s a stress reliever for some of us it’s bad for health and the environment. It can cause can cause lung disease by damaging your airways and the small air sacs found in your lungs. Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis etc and not only the smokers it can affect but also those who we call second hand smokers. But have you wondered what will happen if that 1.3 billion people who smokes will stop smoking? Well look at this video to find out.