Within 8 hours

carbon monoxide level drops in your body
oxygen level in your blood increases to normal

Within 48 hours

your chances of having a heart attack start to go down
sense of smell and taste begin to improve

Within 72 hours

bronchial tubes relax making breathing easier
lung capacity increases

Within 2 weeks to 3 months

circulation improves
lung functioning increases up to 30 percent

Within 6 months

coughing, sinus congestion, tiredness and shortness of breath improve

Within 1 year

risk of smoking-related heart attack is cut in half

Within 10 years

risk of dying from lung cancer is cut in half

Within 15 years

risk of dying from a heart attack is equal to a person who never smoked.