My experience.
One Saturday late afternoon when I was around 19/20 years old I went to my bedroom to watch Gladiators and Beverley Hills 90210, cant remember which order, during these programs I fell asleep. It was late autumn or winter because suddenly when I awoke it was dark, I could hear the TV and the only light in the room was coming from the it. I was laid on my back with my arms straight by my side and looking at the ceiling. I could not move and had a real sense of dread.
In my mind there was someone or something watching me from just outside my peripheral vision. The intense fright was made worse by the fact I could not move my eyes to look. I remember at this point it became difficult to breath, as if my lungs could not take in any more air. All I was thinking was MOVE, ANYTHING, JUST CONCENTRATE ON MOVING MY LITTLE FINGER. Seemed to last for maybe 30 minutes ish but suddenly I was awake and very confused and worried. Again this happened under the exact same circumstances on another Saturday afternoon not too long after, my step mother said "Astral Traveling,that is what is going on". I reserved judgement.
When I was about 30 after putting my 4 children to bed and was waiting to go to bed around 10/11 pm at the same time as my wife, I dozed off on the sofa while she finished watching her show. Next thing I know I was laid, this time on my side, with a feeling of dread and terror waiting for someone or something to suck all the air out of my lungs. I could see the room I was in and my wife, Vicky watching the TV but could not move any part of my body.
I awoke suddenly with Vicky in an alarmed state shaking my shoulder saying " What! What!"I came around straight away with all my faculties working and sat up. Apparently I had been unresponsive when Vicky tried to communicate with me at first but she had heard me trying to say her name many times and this is why she brought me out of my stupor.
No more experiences since then and I am now 40 and think its behind me.
All I can say is WTF.