try process of elimination with your food intake...if you eat
a specific type of food and you
feel the pounding sensation eliminate it from your diet. The only thing that i can think of off of the top of my head is possibly something that you may be drinking during your meal. Anything w. caffeine can def. do this. Coffee, iced tea, colored sodas. energy drinks, chocolate, gatorade products, etc. There have been some ongoing studies in regards to msg and increased heart rates but the prob.