There are a lot of activity in the body that occurs even when we are asleep. No definite reason has been proved for these miraculous phenomena.
Almost 90% of people have dreams of falling. Falling in a dream is said to be a warning from your subconscious that something in your life — finances, a relationship, career, etc. — is rapidly going in the wrong direction. It means it is time to redirect the situation immediately! Falling dreams are very common for people who suffer from depression. Scientists believe that everyone has dreams of falling at some point of their life.
REM or “Rapid Eye Movement” are when the eyes move while we are asleep. Most of the eye movements in REM sleep are in fact more rapid than those normally exhibited by waking humans. REM sleep has been closely associated with dreaming, it happens during the deepest part of sleep and is characterized by vivid dreams. People awakened from REM sleep have proved to perform better on tasks like solving anagrams and creative problem solving.
Many people have the same or a similar dream many times, over either a short period of time or their lifetime. Recurring dreams are said to mean there is something in your life you've not acknowledged that is causing stress of some sort. The dream repeats because you have not corrected the problem. Another theory is that people who experience recurring dreams have some sort of trauma in their past they are trying to deal with. In this case, the dreams tend to lessen with time.
Recurring Nightmares are dreams that are so distressing they usually wake us up, at least partially. Nightmares are usually due to strong feelings of fear, sadness or anxiety. Their causes are varied. Some medications cause nightmares (or cause them if you discontinue the medication abruptly). Traumatic events also cause nightmares.
Parasomnia is a case when our muscles flex involuntarily during sleep. Sleep talking and sleep walking are different types of parasomnia. Sexomnia is an extreme case of parasomnia. Sleep sex or sexomnia refers to any sexual behaviour that happens while the person is asleep of which the person has no memory. This is a parasomnia, where our brain is often confused between weather we are awake or asleep. Often the person might feel that he/she is awake and will know what they doing but have no control over this action.
Bruxism is grinding of teeth during sleep. Regular, persistent teeth grinding can cause jaw pain and discomfort and wears down the teeth. Most cases of teeth grinding (nearly 80%) occur subconsciously during sleep. It can also cause headaches and earache. It is usually associated with contributing factors, such as stress or anxiety.
I personally have experienced recurring nightmares so I thought of making a myTake of the things that occur during sleep. Apart from the above mentioned phenomena there are more unique things that happen like sleep paralysis, exploding head syndrome, slowing down of the kidney functions and many more.
Do share your opinions if you've ever experienced any such phenomena.