hey yall. i was playing americas army and i had just put in a chew(i know you probably think it is gross, but anyway...) all of the sudden my heart starts beating not fast, slow actually, but really HARD. i could feel my pulse beating it was beating so hard. ive never done this before. i always chew when i play aa and never anything like this before. i am 17 140lbs and in good health. why was my heart beating so? could it be the tobacco? i am no n00b to tobacco so i dont think it is that. could it be that i was getting some kind of primal instinct thing going on from playing aa and got an adrenaline rush? im clueless.