Sleep Demons

You wake up from sleeping and you can't breath. Something is holding you down and you cannot move. There is a great weight on your chest. You hear things, maybe footsteps, or scratching, or buzzing, and maybe you see things, like dark shadows, or figures with menacing, glowing eyes, or aliens. You're scared and you're going to die. 

And then a about a minute later you're fine. It was a dream; or maybe it wasn't a dream? You don't know. You also might not know about a medical condition called sleep paralysis. It often accompanies other sleep disorders, such as narcolepsy, apnea, etc. If you've had an episode anything like any of the events in the top paragraph here, you should consult your physician, who will then refer you to a sleep specialist, who will then probably automatically try and get you diagnosed with sleep apnea, even if you don't have it. That aside, it's bullshit for these paranormal groups and TV shows to try and pass this off as paranormal. I don't know how many times I see people retelling their accounts of nocturnal visitors and attacks, without a single person letting them know it's just sleep paralysis and they may or may not have another health issue causing it. Ratings are more important, I guess.

Go back to sleep.