why do i sleep with my tongue slightly sticking out? about 2 months ago i had to train myself to sleep flat on my back, or my shoulders and neck would hurt so badly the next day that i couldn't function. (i have severe disc herniation, spinal stinosis, and nerve damage.) my spouse and i noticed about 3 weeks ago that every time i'm sleeping (day or night) my tongue is sticking out, it isn't uncomfortable in anyway, and it doesn't seem to dry my mouth or tongue out. but i'd still like to know why this is happening, and is there anything i can do to stop it? also, will it eventually mess up the alignment of my teeth if it continues?