Sleep paralysis. It's scary as holy fuck.
Basically, when you go to sleep, your brain paralyses your body so you don't act out your dreams and hurt yourself.

Sometimes you wake up before you become un-paralysed, and even though you're wide awake, you physically can't move a muscle or utter a sound.

What makes it worse is that it's accompanied by hallucinations where you can hear and see people in the room. Whenever I get it, I've learned not to panic anymore, just try to go back to sleep. After a few minutes I wake up normally anyway.
( b3th Not shit. Not mod., Mon 30 Apr 2012, 23:22, Reply)