A WILD try:

So, last night I was conscious for about 2 and a half hours. 3 times I had low vibrations, and in the end I didn't feel my body, and then: nothing. I could even move my body normally, I tried that after some time, and decided to just stop trying. I turned around, and ... slept normally by falling unconscious. (Read the clock a few times before, just to make sure... )

The position I was lying in wasn't uncomfortable, but I cannot remember waking up or falling asleep in that position any time in the past, could that be the problem? Does SP even happen that way, before dreams start?

I also know, that when I'm lying on my -back-, I can fall unconscious to some point, but never fall asleep. When trying I was lying half on a side, half on my back :S

However, when turning around in the end, my body felt like it had been asleep for some time... (need to stretch, the low blood pressure / pulse, `heavy' in some way ...)

Any suggestions?