When I was younger I maybe had SP a few times a year. I didn't really understand it, I could hear and sometimes if my eyes opened or partially opened see, but I couldn't move. I remember vividly one time I was laying there and was conscious but couldn't move and I could hear my sister talking to my brother "look whose still asleep" I wanted to say "no i'm not" but I couldn't move and it was frustrating. I just kept trying to move, like really struggled and after a while I might be able to slightly move a finger or my arm, then I would try to inflict pain on myself like dig my fingernail to my closest body part as possible. Once I inflicted pain my body would start to wake up. Just thought I'd share a personal experience.