Question

whats the reason for sleep paralices

Answer 1

Sleep means rapid eye moment it is done due to lack in sleep

Answer 2

sleep is nothing but rapid eye movement ( REM). during sleep our brain dreams. when our brain dreams muscles stays inactive.

sleep paralysis occur when the person wakes up before REM is completed.

due to this very reason you are unable to move or even speak during this time

I have experienced sleep paralysis many times in my life

Hope it helps!