I'm 100% sure your never actually awake.https://www.nhs.uk/conditions/sleep-paralysis/
Bugger.. i've had a few bouts of it , very unexplained .. It felt like some one was really pushing me down & i could hear the bed creaking and all. It passed eventually and have not had it for a while.
I've had them 50+ times easy, used to go through phases where I would have them a few times a week and then not have any for years.
I think being over tired or having a disrupted sleep pattern is the main cause of them.
but others I think it's your brain detecting a threat and realising you need to wake up and be ready, the fastest way for this to happen is giving you a false awakening dream that's lucid and your pretty much in control of.
the transition to being awake seems to entirely be missing, the only reason you can be sure is if something in the room is different, usually it's really subtle and hard to notice lie there was a gap in the curtains when you were paralysed and now there's not.
I think I had a double one once but I'm not sure.A false awakening refers to the strange experience of “waking up” when you actually remain asleep. It can involve vivid, realistic images that leave you feeling anxious and confused. Some people also experience nested dreams, or more than one false awakening on the same occasion.
Glycine receptors (GlyRs) are ligand-gated chloride ion channels that mediate fast inhibitory neurotransmission in the spinal cord and the brainstem. There, they are mainly involved in motor control and pain perception in the adult
Peever, PhD, found that the neurotransmitters gamma-aminobutyric acid (GABA) and glycine caused REM sleep paralysis in rats by "switching off" the specialized cells in the brain that allow muscles to be active. This finding reversed earlier beliefs that glycine was a lone inhibitor of these motor neurons.
When your asleep you really are paralysed like if someone snapped your spinal cord
Scientists be like "let's learn how to switch rats off" wonder if anyone ever tried it on a human gone wrong and they ended up stuck in REM paralysis