I'm 37 years old, male and over the last few months my heart appears to be skipping a beat. This happens only occasionally during the night, usually early in the mornings, I also can feel my heart beating in my chest and in my head when I'm lying on my pillow, again only occasionally. It doesn't seem to happen during the day or if it does, I don't notice it. I have started to monitor my heart rate and on two occasions it has been irregular for a period of 1 - 2 hours, then it returns to normal.
I exercise occasionally but could do more. I don't smoke, but do drink quite heavily. I have also recently been under a lot of stress from work.