Assuming you have had your heart checked out by a qualified physician and were told everything was normal (and hopefully it really is), a pounding heart is a sign of sympathetic dominance from being in overdrive too long. A treatment approach involving lifestyle and dietary change with proper aerobic exercise is usually the way to resolve this issue. A high stress work or home environment, a diet high in caffeine, refined sugars, bad fats, and other factors lead to this symptom. Too much thyroid hormone (often from too much medication), can cause this as well.
/ / / My heart pounds at night