After 20 minutes
Blood pressure and pulse rate return to normal.
After 8 hours
Nicotine and carbon monoxide levels in blood reduce by half, oxygen levels return to normal.
After 24 hours
Carbon monoxide will be eliminated from the body. Lungs start to clear out mucus and other smoking debris.
After 48 hours
There is no nicotine in the body. Ability to taste and smell is greatly improved.
After 72 hours
Breathing becomes easier. Bronchial tubes begin to relax and energy levels increase.
Your circulation improves.
Coughs, wheezing and breathing problems improve as lung function increases by up to 10%.
After 5 years
Risk of heart attacks falls to about half compared to a person who is still smoking.
After 10 years
Risk of lung cancer falls to half that of a smoker. Risk of the heart attack falls to the same as someone who has never smoked.