As you become more experianced and more aware with WILD's (as I have been improving greatly on within the past couple months), you'll find that you can sense everything, while still maintaining focus. This includes breathing. The first couple times I managed to stay aware on this, I relized, my breathing was completley in control of not by me. I also found that I can mess with it a bit while like this, but I can't stop it or break its rythm.. At times you may think, "hey, my breathing is weird.. when really its not".

The biggest problem you'll have is the fear.. I had great fear the first time i relized I was in a WILD.. the best part was, I didn't intend to be.. so this shocked the hell outta me and with the sleep paralysis and all, i honestly thought I was dying (couple this with the fact that sometimes you feel as if you are leaving your body or sinking through the bed, which really makes you scared". Now that I do understand it all however, i'm cool with it and I let it do its stuff. Nightmares are much the same way, I tend to have fun with them now.