Your blood pressure and pulse rate return to normal.
Oxygen levels in your blood return to normal and the levels of carbon monoxide are reduced by more than half.
Carbon monoxide has been eliminated from your body. Your lungs start to clear out mucus and other smoking debris.
Your ability to taste and smell is improved.
Breathing becomes easier. Your bronchial tubes begin to relax and your energy levels increase.
2 to 12 weeks
Circulation improves throughout the body, making walking and running much easier.
Your heart-attack risk falls to about half that of a smoker.
Your risk of lung cancer falls to about half that of a smoker.
Your risk of heart disease is nearly the same as someone who has never smoked.