A few days ago I went to bed earlier than my usual time. After 15 mins of thinking I finally drifted into sleep. I don't know when I actually reached this state or how... It was kinda like I partly woke up (just my conscious not my body).
Anyways, when I realized this I quickly thought of trying to lucid dream since I'm in this state. Suddenly I felt this strange feeling coming from the back of my head, or to be more precise, from the position of the cerebellum. It would gather up at that spot (intensify) and at a certain limit it would... hmm... explode? Sending the feeling throughout my body and disappear. All that would last for like 3-4 seconds. And it would repeat, just like a pulse, each time more powerful. It was the feeling of being free from my body (it's that feeling that you get when going into a dream consciously). After 3-4 pulses, when it would get strong enough, I would be able to enter a lucid dream.
Everytime the dream would end I would return in that state again and just wait for the right pulse and start dreaming. It was fun I had 4 dreams in a row, but they lasted no more than 1 minute each. When my last dream ended I could still feel the pulse but I lost my conscious.
This isn't the first time I've been in this kind of state. Last one happened... 6 months ago? ...
Well anyways, what I want to know is: what the hell is this?