give this guy some suggestions to help out, ..
it's normal and nothing to freak out and in layman's term it's a sleep paralysis.
no bhoot-soot..
it's how your brain acts sometimes, if it's frequent, it is because your brain needs rest.
it's happening to so many people, the similar experience and this phenomenon is 'sleep paralysis'.

don't worry bro , chillax, and next time make sure to research what would you do when that happens and when you set your mind ready like that, it doesn't occur, believe me.

you mind is very powerful than you think. try to acknowledge it, not fear.