The document discusses smoking and its consequences. It defines smoking as inhaling the smoke of burned substances like tobacco. It then lists some common reasons why people smoke, such as following the behaviors of parents/friends or managing stress. The document outlines several potential symptoms of smoking, including bad breath, discolored teeth/fingers, and various respiratory issues. It also discusses some serious health consequences of smoking like various cancers, emphysema, and strokes. The document concludes by providing some tips for quitting smoking and sharing smoking statistics.