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Message: <blockquote data-quote="Derek" data-source="post: 2099790" data-attributes="member: 211050">I used to smoke occasionally and once after smoking I noticed my heart rate was really high for a while, like 140 bpm.  I looked that up and I think it was a super-ventricular tachycardia, which can be caused by smoking but isn't usually serious.  But ever since then when I just take a puff on a cigarette I feel really sick.  Is it all in my head?  I don't really have any desire to smoke, it just bothers me-like that shows that I am unhealthy in some way, so I would like to know that I could smoke a cigarette if I wanted and it wouldn't be a problem.what are some reasons for it making me sick?</blockquote>