adhd and cigarettes If you have you've always "needed" a cigarette to focus — you weren't imagining it. Your brain was self-medicating. Nobody just told you that's what was happening. The more you Impulse, Stimulation, and Smoke: The
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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/ee4596c50e727a895beaf93d86df2a7f8e7397a9/4-Figure7-1.png)

















