I had this several times before. I sometimes woke up in the middle of the night and when I closed my eyes or sit still It was like the sound and feel that the blood pumped fast through my head. It kinda scares me and makes my head kinda numb. The most recent one was when I woke up and I had SP for the first time. I had my eyes open but I just couldn't move a muscle. Then again the blood kinda rushed through my head in a constant motion and then I woke up.

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