How to Quit Smoking - Affects of Nicotine share 7 days ago by Stop Smoking by Corey Roberts Nicotine is a powerful drug that is contained in tobacco. When you smoke, your body builds up a nicotine tolerance level. When your nicotine level drops below your tolerance level, you will want to smoke because your body starts to crave nicotine. There are many effects of nicotine. ... Breathe Easier Now - breatheeasiernow.com |