Why are humans typically able to remain in the bed without falling out of the bed during sleep?
a. You are consciously aware of the bed's boundaries at all times during sleep.
b. Most people typically fall out of bed, but because they are unaware of it they do not report it.
c. Your brain is still processing information about its surroundings, thus you are aware of the boundaries of the bed.
d. Your brain signals the body to become paralyzed during the night so you do not move off the bed.