3 days of not smoking cigarettes I'm 56 and I've smoked for 30 years. Sometimes I think, what's the point in quitting? The damage has been done. : r/stopsmoking Uncover the facts | ZONNIC
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![PDF] Effects of smoking on heart rate at rest and during submaximal exercise, heart rate recovery and blood pressure in young adults](https://figures.semanticscholar.org/ee4596c50e727a895beaf93d86df2a7f8e7397a9/6-Figure12-1.png)














