Recently I set my watch to go of every hour. Just a bleep. Everytime it does I do a reality check. Then whan I go to bed when my watch goes of It ,in theory, triggers the thought I might be dreaming. The problem is I cannot here high pitched sounds very well. So I was convinced that I could not here my watch under the covers and down on my arm while I am sleeping.
So what I did was to get a big rubberband and strap the watch to my ear.

Nothing happened???
I still think it can work.