I'd like to think 70-80 wasn't terrible. Mine is usually 65-75 when my anxiety isn't too high. Do you know for a fact that your fast heartbeat is due to anxiety and not some underlying medical condition? It should be evaluated by a doctor if accompanied by dizziness, nausea, shortness of breath or fainting, or in any case if it is consistently over 100BPM (tachardia). These could be symptoms of an arrythmia. Most of these are benign but some are serious if untreated. Inthe interest of total honesty, I'm not good at taking my own advice as I have had the whole heart palpatations thing and haven't really been evaluated, but on the other hand, my episodes are not associated with the danger symptoms above and it would be unusual for me to see over 100BPM unless highly anxious at the time, and even then, usually not. How old are you Oswald and are you male or female if you don't mind telling us? I'm 32, male and in generally good health, so I think the odds are mine isn't too serious, but you never know.