Prevention is always better than cure.To protect your lungs
1.stop smoking
2.do not be around smokers
3.protect yourself from pollution
4.exercise daily
5.go for yoga and meditation
6.cardio exercises increases the lung capacity
Avoid cigarettes and smokers. This is one of the primary causes of lung cancers and other lung disorders. And always cover your nose and mouth with your handkerchief to prevent smoke and pollution from coming into your system.