Male non-smoker, non-drinker. 36yrs old.If I move too fast or do something strenuous my heart beats out of my chest, I have to fight for breath, my head gets fuzzy, and my hands tingle. Also, once in a while during the day the symptoms will happen even if I'm not doing anything. This come on in the last week or so. Since this started my balance has been a bit off, my thoughts not QUITE as clear, and my feet have felt colder. Caffeine makes my symptoms worse, and the symptoms are worst first thing in the morning as soon as I get up.