I am surprised that this does not seem to be documented anywhere on the internet (or maybe search engines just suck these days), but I discovered a few years back that eye muscles aren't the only thing you can control during deep sleep. There is a muscle in the back of the throat that can cause snoring, which you can also control while lucid dreaming or while in sleep paralysis. I activate that muscle to try to cause the loudest snore possible and wake myself up within 2 snores. I have been using this method to great success most of the time, except today where even after 2 extremely loud snores I still did not wake up, which was quite disconcerting.
I was then awoken by my wife loudly complaining about my snores, which confirms that the control over my snores was real rather than imagined.
