I will try that out, indeed. But I really wonder, is there any good explanation to why the breathing gets all funny? To me I think it is due to breathing being both a reflex as well as a usercontrolled option. You may decide to stop breathing but once you pass out the body starts to breathe as the reflex kicks in.

Is this something similiar? That my ( unwanted ) struggle to maintain control of the breathing while the SP tries to put the reflexbreathing into motion makes the weird and uncomfortable feeling?