Smoking is a hazardous addiction in mankind. One should understand the changes the body undergoes on quitting the addiction; it will persuade the quitting. The body immediately starts repairing itself on quitting the smoking.
The changes begin within 20 minutes of quitting, the heart rate will return to normal. After two hours, both the heart rate and blood pressure levels will return to normal — and this is when the nicotine begins to fade out of the system.
Three days after quitting withdrawal symptoms of nicotine reaches its peak causing headaches or nausea, as well as crabbiness. This moment also indicates the normalcy returning to the blood carbon monoxide levels.
From one to nine weeks after quitting, coughs, shortness of breath, or burning lungs during physical activity will begin to decrease. After years the risk of heart disease and that of various cancers is reduced to half.
Quitting smoking before the age of 30, one is expected to live the life of someone who has never smoked before.
Quitting the addiction also has positive effects on brain, skin, lungs, heart and teeth.