1. Sleep paralysis explained by science
Science may not have all the answers, but it the matter of sleep paralysis they seem to have a theory which seems far more plausible than an Incubus or Succubus sitting on your chest. It has already been clarified that sleep paralysis involves the rapid-eye-movement cycle (REM). We know that during this time a person has no voluntary movement and they experience very vivid dreams. The reason for this muscle paralysis is thought to be an evolutionary adaption that is meant to protect a person.
When a person is experiencing an intense dream if they were given free reign to move as much and however they pleased, there arises the possibility or injury. The brain, therefore, has adapted to combat this. When a person enters the REM stage of the sleep cycle, there are two neurotransmitters that are released. These are glycine and GABA. Both of these are required for the paralysis of voluntary muscles. In the event of sleep paralysis, there is a mishap involving the REM cycle. A person either transitions badly out of it or into it.
When this happens, the neurotransmitters are released which effectively stop muscle movement and yet the person’s mind does not enter the dreamscape. Their mind is in the here and now, but their body believes that it is dreaming. This miscommunication or disconnect is what we refer to as sleep paralysis.
The brain and the body are however able to communicate very quickly, and it should not take too long to correct the mistake. The secretion of the paralyzing chemicals is stopped while what is left in circulation is taken back up. Once this is effectively done, a person should be able to move their limbs once more. While sleep paralysis can be a terrifying experience, it should be noted that there is no real danger. There are no documented cases of people dying from sleep paralysis.