Hi, I want to use marijuana for medical purposes and I am growing a plant right now. My problem is that every time I smoke weed, I get a very unpleasant sort of feeling. It is not paranoia or mental anxiety. It it's more of a physical thing - my thoughts and perceptions remain pretty much intact, but my heart starts racing and this makes me very uncomfortable. I have read hundreds of reports from people who experience that same racing heart problem and none of them has ever come to a real solution to the problem. Some of those guys even suggested that one should start taking benzodiazepine drugs before smoking in order to be able to smoke pot without the racing heart thing. How fucking ridiculous is that? Anyway... I don't believe that there is any significant difference in effects between the different strains of marijuana (especially in the physical effects - racing heart, etc.). I have found that both Indica and Sativa dominat strains do give me a racing heart, no matter what. However, I am ready to experiment. My question is: are there any marijuana users on this board who get the racing heart problem every time they smoke weed, but who have found out a strain that doesn't cause that problem? I need first-hand advice, that is based on the personal experience of the users, not the usual generic "Indicas will not give you a racing heart" answers. Thank you very much, people!