I'm curious- an irregular rhythm that regulates with deep breathing- is this common for irregularities? Why/why not? What could this be? (This isn't asked to diagnose- not looking at a patient or self here- it's just a point of curiosity as to what sorts of irregularities are something to worry about and what aren't- and the anatomy of WHY an irregular beat might regulate with deep breathing... The cardiac system is my current focus and curiosity LOL ... Thanks in advance!