So I started smoking cigarettes about a year and a half ago. I have never been an avid smoker, a pack will usually last me 4-15 days and that rate has been pretty much constant this whole time. When I first started smoking them I, just like everybody else, would get a nice headrush when I dragged them. Then of course this went away...until about a month ago. Now when I smoke them I get a mild headrush every time and on some occasions it becomes very intense (hookah like)like the ones I experienced a year and a half ago. I don't mind them, I have had to deal with far worse side effects in my time, but I do want to make sure that this isn't indicative of some larger problem, most likely one that is cardiovascular in nature. Any thoughts?