Young people who smoke cigarettes are likely to be less physically fit and have more respiratory (breathing) problems than people their age who don't smoke.¹⁹ Coughing, wheezing, shortness of breath, and phlegm production are symptoms that young people who use tobacco report they are more likely to experience than non-smoking peers.¹⁹

And then there's the issue of addiction, making it difficult to stop doing something.

TRUE OR FALSE?

The younger a person is when he or she starts smoking cigarettes, the more likely he or she is to become addicted to nicotine.¹⁹