I used to be an athlete and have always been healthy, but after experiencing some episodes of anxiety and heart palpitations a few years ago, I have become scared to exercise, or to run or do anything that makes my heart beat really fast.. I went and saw a cardiologist a few years ago and did several tests and they came out normal. Lately I have been getting paplitations again, feeling like my heart skips beats everynow and then, and I get even more scared to exercise, since I heard that exercising is good for anxiety.. Should I be worried, should I go back to the doctor or does it sound like it's just all emotional and anxiety?