Hi, I am a 20 year old male; I am 5 foot 10 inches and weigh 174 pounds. I have had a problem with my heart skipping beats for about 4-5 years. It sometimes happens a my resting heartbeat, but rarely. The time when it mainly happens is after I exercise(during exercise to, but not nearly as bad). I almost always have an episode where it will skip for nearly 3-4 hours after I exercise and often several times in a minute within this 3 hour period, sometimes every 3rd or 4th beat. When this happens I have a strange emptyness feeling in my chest and I get shortness of breath, it also causes me to have a slight headache and feel a little dizzy. It kind of seems that my heart is trying to relax when it happens because when I start coughing or go run it stops. This skipping beats buissness really has me a little worried. Could this be killing my brain cells? What should I do? I had a couple of scary episodes in the past where my heart went completely haywire while I was working out(pulse accelerating/slowing, skips, double beats). At one point I couldn't even walk up stairs with out my heart going crazy. I saw a Cardiologist and ended up getting a Catheter Ablation for this about two years ago. I geuss it worked in the fact that I haven't had one of those crazy episodes during exercise, at least not yet, but rather I have a long period full of numerous skipped beats after exercise. Also, since I have had the Ablation I feel stinging to every heart beat when I stand up straight after exercise; when I bend slightly it goes away. Could this be something due to the Ablation? Also, sometimes during a day I will feel really short of breath for about 5-10 seconds then it just goes away, even if my heart is not palpitating.