I have to disagree with you dudki or whatever your name is I apologize. I have always breathed through my lungs, and if I begin to breathe through my heart I will be taken directly to the ER because there is a serious problem. When you drown does your heart fill with water or your lungs? No lungs, no oxygen, no oxygen, no brain function, no brain function, no nerve function, guess what, CNS quits working so does the human body. Good luck missing those veins. Correct aspiration should avoid any vein problems if done correctly anyway. No disrespect, just not sure of your "bro" response". This is maybe my second post on this board I know, but been around from day one, gerkes, chevvin, and all the old school people people, and I've never left, so I'm no fool or rookie. Thanks.