I just had the strangest thing happen to me about an hour ago...
I was laying in bed trying to convince myself to go back to sleep.  I'm working graves now, and I'd woken up at 7:30 when the phone rang.  Well, it was 9:15, and I was rolling all over the place in bed.  I got so frustrated I just started staring at the ceiling thinking of anything that would make me go to sleep.  So I'm laying there, and all of the sudden I can't even breathe.  I couldn't move, and my eyes got really heavy.  I'd try to open them, but I couldn't get them open for more than two or three seconds at a time.  So now I'm freaking out wondering what's going on, when I feel this shadow pass over me.  I managed to get my eyes open long enough to see what I'm guessing to be a person (or something like it) in a black hood and cloak, and the thing was reaching for my face.  I tried to yell, and I tried to scream, and I could feel myself breathing in, but as soon as I had my breath it was like something slugged me in the ribbs and I lost it all.  I couldn't make a sound, and my whole body was paralyzed.  I still couldn't get my eyes to work well, but I could feel this thing getting closer, and all I kept hearing in my head over and over again was "Fight it, Tiffany.  You better fight it or it's going to kill you."  So don't ask me how I was able to move but all of the sudden I was.  So I start rolling and punching at the air and kicking - anything I could think of to get away from this thing.  I could feel it grabbing at my arms and then my legs.  (My eyes still weren't working well, and I still couldn't speak)  So I just kept fighting.  I 
felt it bite the bottom of my right foot, and I felt skin under my fingernails when I managed to get ahold of it.  I kept hearing that voice in my head the whole time, telling me to fight at first and then to get up.  So finally I just start concentrating on that voice, and before I know it I'm not moving anymore.  I'm just laying in bed staring at the ceiling again.  I looked at the clock, and it was 9:35, and for the life of me I could not get myself to stay awake.  My eyes were so heavy I felt like I hadn't slept in a week, whereas just 20 minutes before I couldn't even get my eyes shut.  I was so scared.  I don't know what it was...  But it felt so REAL.  So I got up.  I just had the feeling that I needed to do my best 
not to fall asleep, and I had to get up at ten anyway, so it made sense.  I hope it never happens again...