It can be normal in younger people for their heart rate to speed up and slow down with their breathing, by irregular what do you mean?
 ) and it seems that might be what it is... It speeds up when I breathe in, but slows right down when I breathe out, to the point where it is about half the speed, which results in bringing my average BPM right down...
) and it seems that might be what it is... It speeds up when I breathe in, but slows right down when I breathe out, to the point where it is about half the speed, which results in bringing my average BPM right down...
 
	