Hi. On and off now but was regular before I have been experiencing palpitations. They seem to be more frequent when I m stressed or tired, or they can be brought on by particular movement like moving my right arm or sitting a certain way. I have been diaognised with Sinus Arrthmyia but I m not too clued up about it but I know it s nothing serious. What s weird is that one week I ll be fine and not experience them and the next week I ll have them again and frequently. These started to happen after an episode of artial fibrillation I had about 4 months ago which was caused by drinking. Is it normal to have these palpitations when I have sinus arrthmyia? I am a 26 year old male. Thanks