Sometimes it's good to be a quitter. According to the American Lung Association, after 20 minutes of stopping smoking, your blood pressure drops; after 2 days, nerve endings regrow; and after two weeks, circulation improves. Just think of all the other healthy things that can happen when you give it up for a lifetime. So what are you waiting for? January is Smoking Cessation Month.And these materials can help you better understand lung health and ways to kick the habit for good.