What I do is inhale through my nose while taking a draw in, then don't let it linger in my mouth. I draw it back into my throat and that sends it to my lungs via the windpipe. Never considered it as something which required explaining so that's about the best I'm able to explain. You can either get it, or not. No shame either way. You might get it once when you're relaxed and not trying. Then, once you get it you'll be able to do it without thinking of it. Yes, in away it's kind of zen thing. *chuckles*