Hello ok sorry if it was a little unclear

Sleep paralysis (body paralysation) is real and it does happen but it happens when we dream.
But let's answer the question with your grounds. And that is that a wave of sleep paralysis happens while we relax and then we can use that state to transition into a dream. And well even if I had accept that this was true, my point is that it's still a very contra-poductive state to look for, because when you are not used to the signs and sensations of the body's own relaxation, you will misstake normal relaxing sensations for the sleep paralysis.
And by doing that you will for example feel a mild vibrating sensations (sometimes even heavy) or some ringing in your ears or any other sensations that is assumed to be sleep paralysis. And that will lead to and already does lead to, hundreds of threads on Dreamviews about people saying "I got to sleep paralysis this night and I couldn't enter the dream pls help me!".
So even if sleep paralysis did happen before we dream, it would be very easy to misstake it for the body's own relaxing sensations, so you can end up very frustrated.
But now back to how it actually is in my experience and all the Dream Guides of Dreamviews <-- No authority argument, it's just to make you see that I am not alone with this view. Sleep paralysis happens when we already dream, and thereby already are in the dream. So why look for some paralysis when it's in facto really hard to feel it in an awake state, unless you have a sleeping disorder which is called sleep paralysis that people who act out there dreams in their sleep have for example, also called sleep walking.
And the illusion of sleep paralysis is that you think you are in your physical bed paralysed unable to move, but you are actually in your dream version of your room, perhaps being slightly aware of your physical body which affects the dream and makes you unable to move, but you are actually in the dream, so why waste time on trying to transition here when you already are in the dream?
I hope that I didn't made it confusing for you, if I did

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