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Time since quitting: 1 hour

Barely 20 minutes after the last cigarette, the heart rate and blood pressure drop to normal and blood circulation improves.

13 good reasons to stub out that cancer stick!

Smoking kills. While this is a hard, scientifically-proven fact of life (or death), few smokers realise the great benefits they stand to reap once they give up cigarettes. Here’s a list of of how a smoker’s body and physiology respond to the cessation of smoking, even as little as an hour after quitting lighting up.

Sources: Images: Getty/ Info: National Health Portal