
In normal REM, neurotransmitters in our body act as paralytics to stop us from moving around during our sleep and when the dream is over they release their hold. The condition of sleep paralysis occurs when you wake up in the middle of your dream when the neurotransmitters have you temporarily paralyzed.

In this type of dreaming your brain remains awake during short sleep, by which one run their own dreams. When graphic records of brain waves was made it has been found that this disorders occurs from part of brain which controls self-awareness.

In this type of dreaming in the middle of the night one wakes up with the loud noise. It occurs when your brain is in non-Rem sleep mode. During sleep body starts responding to brain fear-center, thus resulting into weird experiences like fighting or flying high in air.

Sufferers of REM Sleep Behavior act out their dreams by body movements like kicking and punching. This can either be a reaction to a withdrawal from drugs and alcohol or the use of antidepressants. This behavior can also be seen as a precursor to Parkinson’s disease.

In the middle of your sleep, a stimulus like hunger, stress, or sleep apnea can partially wake you. In this state of lowered inhibition you end up eating foods while you are semi-concious.