I was once sleeping in a room all alone when a thick rubber ball hit me in the back. The ball was originally 4 feet away from me on the floor and the bed was 2 feet above the ground.
That is only one story and that is the short version
Now, there's a lesson! Don't fall asleep on the squash-court.
I would have been.
You may want to or not believe but this is true and you don't have to . (People who read this).
what you felt is true. but that does not necessarily mean that how you interpreted that feeling is true. i mean, it's true that you felt something is choking you. but that does not necessarily mean that it's paranormal.
what you probably experienced is what is known as "sleep paralysis" accompanied by hypnagogic hallucinations. at least that's what the symptoms seem to me.
check out this page: Sleep Paralysis
i once experienced that...