In the islands where im from sleep paralysis means one of two things logical and metaphysical.Lets start with the logical it means that your mind is aware /conscious but your body from resting so long most times on your back all of your organs go into standby mode and become even too heavy for your to move bc of lack of blood pumping at normal capicity to power the calmanmuscles to resume mobility in this case you dont panic because thats how most ppl die in their sleep what you do is just stay calm and start working your fingers toes then gradually onto larger parts but keep happy thoughts even if its take too long.Now we are on explanation 2 which is you are being attacked by something the equivalent to a succubus/incubus called a Heg that also drinka your blood and stuff like that .They say they are attracted to lustful people who masturbates too often ,good looking, ,basically too sexual but this makes you kinda depress and dont like eating during the day and eventually lack sexual feeling for humans but long for the night for your "dream lover"that could lead to you being barren ...But both account will say not to sleep on your back and keep positive thoughts