被鬼压

Also known as sleep paralysis, find out more on SGH website >>> http://www.sgh.com.sg/about-us/newsroom/News-Articles-Reports/Pages/Feelingparalysedwhenwakingup(.aspx

Extracted from Baidu.com >>> http://zhidao.baidu.com/question/93094981
关于“鬼压身”的科学解释
人在睡觉时，突然感到仿佛有千斤重物压身朦朦胧胧的喘不过气来，似醒非醒似睡非睡，想喊喊不出，想动动不了，人们感到不解和恐怖，就好象有个透明的东西压在身上，再加上配合梦境，就被给了个“形象”的名字——————鬼压身。其实，这在医学上叫”梦魇（音眼）“
同做梦一样，梦魇也是一种生理现象。当人做梦突然惊醒时，大脑的一部分神经中枢已经醒了，但是支配肌肉的神经中枢还未完全醒来，所以虽然有不舒服的感觉却动弹不得，这时，如果有人叫醒他 或推他一把，梦魇就会立即消失。

Last night, after an overdose of caffeine, I was feeling brightly awake and unable to fall into my usual slumber. Tossed and turned several times until I finally hypnotised myself to sleep by pretending to. I would describe it as 'plastic sleep'. I felt my eyelids were transparent. I was having difficulty breathing slowly - just a level before I gasp for air - and controlling my racing heartbeat. When I thought I fell asleep, I felt my eyes were wide open. It felt like I was under a plastic blanket. Uncomfortable, warm, bright, hard, fake.

Sometime into this 'plastic sleep', I heard croaking sounds. I battered my eyelids. I was no longer pretending to sleep. My ears perked a little. The croaking sound was from my sister's bed. It went "Earhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...." in a medium low pitch continuous drone. It dragged for really long (probably 30 seconds?) before I decided to shout to my sister.

"Oei, J. What are you doing?"

Never before in my life, I saw my sister jumped out of her bed instantaneously.

"I was waiting for you to wake me up! I couldn't move! I was trying to shout very hard!"

Then she described her ordeal which turned out to be sleep paralysis.

Thankfully I had an overdose of caffeine, so I reduced her pain by maybe 15 seconds.

I went back to sleep at 3:45am after popping a multivitamin. After 3 hrs of sleep in 24 hours, I am now still bright and awake.

Farking caffeine.