I have been wearing a chest hr monitor for the last week and have been concerned that I seem to be tachycardiac in the afternoons. My resting heart rate whilst lying on the sofa is averaging at 110 but sitting typing this on my tablet its peaking at 130 BPM. I'm naturally concerned about this but as I live in the UK and rely on the NHS I don't know what to do about it. Not sure how seriously my GP will take it and whether any investigations will get me v far. Could anyone advise me?