I don't enter deep sleep much. There was a time when I was taking a slew of particular vitamins that I slept truly well for a few weeks. But I haven't recreated that exactly sense. It makes me wonder about myself now that I'm reading all of this... The thing that seems silly is how young I am for it to be happening.
Really easy to have someone watch you sleep for a while. There are many people 30 years old with it.