Smoking

Nowadays, smokers know the health risks of smoking but yet many teenagers take up smoking during school years. I think teenagers in school, view smoking as a sort of rebellion. teenagers may take up smoking to fit in with their friends or feel they appear "cool". Others may take up smoking out of curiosity or they feel it's a way for them to relax. Celebrities smoking in movies may encourage teenagers to smoke because they will then view smoking as glamorous and sexy.
http://http//www.lung.ca/protect-protegez/tobacco-tabagisme/facts-faits/teens-ados_e.php>

I personally was glad when smoking was banned from public places on 1st July 2007 because that meant i wouldn't come home from a club or restaurant smelling of cigarettes when I am a non-smoker.