I have had a random "cardiac" problem for years now that I would like some help with. I have been to the doc and he pretty much passed it off as nothing, but it concerns me. Every once in awhile, with no pattern or consistency, I'll get a "funny" feeling in the center of my chest. I can't really describe it. It's not tightness, it's not pain. Probably the same feeling as if something inside my chest was moving around. You know those "bubbly" feelings you get in your gut? It's kinda like that, only in the center area of my chest. The feeling makes me want to take a deep breath. Originally I thought it was related to high consumption of caffeine, but it happened today (hasn't happened for the past few months) and I haven't been drinking any caffeine. I don't have any pain in the arms, neck, or legs because of it. It doesn't make me actually feel short of breath, nor does it make me feel dizzy or fatigued. It just annoys me. I assume it's not something serious like an arrythmia because it doesn't really hurt or interfere with anything. Respitory problem maybe? Or just some weird random thing everyone experiences? Sometimes when I'm working out I DO get really tired and light-headed and breathe heavy, but I have never actually passed out. I have determined this is probably more likely due to poor diet than related to the above. Normal heart rate is 60-70 BPM, white 23 y/o male non smoker. Mother has hypertension, grandmother same with heart disease (I think) but no history of heart attacks on either side. I'm looking for some insight or links to stuff to read regarding what you think the likely cause is. Thanks for any help. I would go see a doc, but I don't have any insurance right now and the family doc wasn't much help -- I'd need to see a card.