Reading your post...
You mention that after having completed chi-gong,you felt your heart racing (I do not know what the intensity of your exercise might have been,but the possibility of the exercise itself causing it strikes me)
You indicate that when your instructor came by,you did calm down (him telling you that gong probably is not the cause)
I posit that it´s just anxiety,psychosomatic causes for large (naturally I´m wholly unaware of your underlying medical condition) Whatever may the factors behind there be,I´m well aware that extended periods of such stress can be dangerous indeed and responsible for similar symptoms that you hand out.
Besides this,it does not really have to be qi-gong...
I suspect that further tests won´t reveal anything related to your practices as we know them.I suggest you trust those professionals (be wary of alternative doctors,in this context,telling you about underlying pathologies that regular MD:s simply cannot detect,or so they say)
Wrong I might be but I suspect that the fact that one of the doctors told you to not mention it to others,might have to do with the esoteric nature of your hobby (which,clearly not everyone knows how to deal with)
Just my ideas.
The sunset´s setting down.Lay me on the forest floor.
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I do not necessarily stand behind all of the statements I have made in the past, in this forum. Some of the statements may have appeared to support a biased view of reality, and may have been offensive. If you are a moral person and were hurt by comments that I made, you can PM me about it and I will apologize if I find your cause reasonable.
-FC, summer of 2006-