Hello. First of all, a little background that might help:
Ever since I entered puberty, I had heart problems. It first started when I almost accidentally fell off my chair. That, for the first time, trigger a tachycardia that lasted for two minutes. Luckily my brother was there to help me (he has the same problem. Actually, both my father and mother have the same heart problems, so I probably got it genetically) to help me clam down. Since then, things only got worse. I was diagnosed with respiratory arrhythmia, tachycardia (possibly fibrillation, the doctors couldn't decide), and medium-high tetany. And as years passed by, the problems got worse. It even got to the point where I had to be hospitalized. The doctors couldn't, though, find the reason for my problems and wrote it off as "anxiety" and sent me home. I am 17 now, soon 18.
Now to my problem: I am not the most exercising guy, one of the reasons being the problems I have. Also, laziness. However, when I get some exercise, if it's a rushing kind of exercise (running) or if it'S over a long period of time (an hour+), I feel really weak after about half an hour after said exercise. That'd be pretty normal, but...
My heart sometimes effectively stops. I mean, not that it skips a beat, I mean it stops for about two, three seconds, and it effectively throws me to the ground. I can then barely move, and I am scared as all hell, which leads to panic, which leads to more problems. I have to lie down and squirm around out of fear of my heart stopping again, this time permanently. When it stops, I then feel even weaker, and my heart beats really slow and I am light headed and feel myself as being on an edge of another heart stop. The first time this happened was after I came out of the hospital where I lay for two days.
My point is, is there a way to prevent these except for the whole "exercise less"? I am already trying to not over-exert myself, but sometimes I lose myself in the moment and go beyond the limit (which is really, really limited). Is there a safer way to train my heart to accept more "burden" without almost destroying itself? I mean, when I don't do anything for days, the heart problems get worse, but when I finally do something, I am on the verge of a heart attack. I really need some advice, because my doctors won't do anything, instead opting to telling me to "monitor" my heart problems and leaving it there, without doing anything when I actually suffer the problems. Any help would be great, really.
Sorry about it being so long, and sorry about grammatical mistakes. I just came back from half an hour of biking and have the problems I described. Swaying around my keyboard like a drunk, because I feel weak and my heart is really, really freaking me out. Gotta love genetics.
BTW: All I am taking is some magnesium and Koenzym Q10 Plus (Coenzyme q10 in English, I guess), if that helps.