What are your eyes up to while you think they are quietly asleep?
About 1953 came the discovery of sleep, or more precise, REM Sleep, which means:
Rapid Eye Movement During Sleep.
About the 1950’s it was discovered that while we are deep asleep, we have rapid eye movement, and twitching. REM happens in babies, in birds, in animals, and of course, in people.
Stages Of Our Sleep
Normally there are anywhere from 3 to 5 times of REM per night. The first episode usually comes around 1 to 1 1/2 hours after we fall asleep. Then they happen every about one to two hours. And they usually last about five minutes to even more than an hour per episode. The episodes will last longer towards morning, than they are at the beginning of sleep.
Mostly, during REM, our muscles turn off and they are paralyzing the body (natures way to protect us from harm). Our muscles, however will twitch.
Non REM Sleeping
NREM sleeping is actually four different stages of increasingly deep sleep. This leads to REM sleep. Stage one: You think you are awake, but, in reality, you are drifting into the land of sleep, disconnecting from your surroundings.
The deepest stage is stage four. Our brain waves are actually slow, but high in voltage; we breathe slower, and our heart slows down. Our blood pressure also will drop. This is the stage where people will sleep walk, and where, they are the hardest to wake up.
And then, there is the Land Of Dreams
Everyone does dream, but not everyone remembers their dreams. The dreams we do recall are mostly those that happen during our REM Sleep.
I am sure we all have stories about what happens during sleep. Sometimes it’s no wonder we wake up tired.