Way to go Mr. President! Everyone knows that's a hard task and yet everyday people smoke that last cigarette and become 'smoke free'. Reports are he used Nicorette gum to help with the cravings.
This is a giant step in improving his own heart and lung health. It is also a powerful example for all who may still be smoking.
Once you have been smoke free for 5 years, your lungs are much healthier but not as perfect as someone who has never smoked. Going from a smoker to a non-smoker will strengthen your heart and improve breathing capacity. Heck, it will also drastically lower your insurance premiums.
If you are working on your heart health, this is the number one step to take. Your heart will thank you. So will everyone you love.
(picture from http://www.usabledt.com/ 10-14-2009)