If all the facts about smoking have not convinced you of its dangers, try this:
Step 1: Take a puff on a lit cigarette without actually inhaling the smoke into your lungs. Just suck it in and hold it in your mouth.
Step 2: Take a piece of white handkerchief or clean tissue and hold it up to your mouth.
Step 3: Exhale the smoke through the handkerchief or tissue and you will be able to see the tar that is would have been deposited into your lungs, had you inhaled the smoke into your lungs. Keep in mind this happens in every breath of smoke. Just image the cumulative effects of smoking a pack of cigarettes a day for years!