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What is sleep? What happens while we're sleeping? Despite the fact that we're just laying there in bed like robots Bobby Portis Bulls Jersey , things are always cooking behind the scenes. Let's take a quick look what exactly is going on during the night. After all, we dedicate a huge portion of our lives to it...
Sleep can be categorized into about four stages according to American Academy of Sleep Medicine which lumped together a couple of what used to be five stages back in 2007. Okay, it's a science... It's evolving. During the night we rotate through a complete sleep cycle several times until we finally awake the next day. Starting with stage one, progressing through stage 4 REM (Rapid Eye Movement) and then back again to stage two to start the cycle over. Stage one is usually skipped for the rest of the night.

STAGE 1
The magic starts when your tired head hits the pillow with your eyes closed and your wondering thoughts begin tapering off into the distance. This is the first stage where you will find yourself drifting in and out of sleep. This stage is the lightest of them all and can be easily interrupted. It's a transitional period of slight unconsciousness which can be compared to a day dreaming