Dear patient, Thanks for the question. Yes, indeed your story sounds suggestive of a supraventricular tachycardia, which is usually a small focus of cells in the upper chamber of the heart that fires rapidly in an intermittent fashion; it is a benign arrhythmia that does not kill people, but can give symptoms like fatigue, shortness of breath and be relatively disabiling if very frequent. Mainstays of treatment include indeed avoiding stimulants such as caffeine, chocoloate, tea, tobacco, energy drinks, over the counter cold remedies,etc. If the episodes are very frequent, there are medications to reduce the automaticity of the heart like calcium channel blockers and beta blockers; ultimately, if medications fail, usually the small area of the heart can be burned in a procedure called an ablation. Yours truly, Dr Brenes-Salazar MD Cardiology Mayo Clinic MN