I will never forget it.
Under the silly preconception to be in a real danger - I wanted out of it and maybe that over-stabilized it.
I was acutely aware to fully exist in an alternate reality - with all my mind and senses in a surrounding seeming "more real than reality" and at the same time I knew for sure, my body was still lying in bed.
But there seemed to be no way, how I could get back to it for a while - until I really managed to force-wake myself - and right into a bad case of SP.
This changed my view of the world and the objectivity of experience in general.
A real epiphany.
I wish I could get back to this point of total immersion soon.
There was only one similarly stable - and in that case fearless and beautiful - LD later on.