By wilding your recall can be better than even "awake life". It's the best choice if you wanna ld hard. And do not bother about swallowing, any worries will just be a obstacle for you sleep. I prefer to just try to stay awake, no matter how time it passes, and surprising enough, this makes me sleep faster than I've ever slept, although I just managed to do a perfect wild one time.

oh, and you can wild even without feeling sp.