Three nights ago I had a spontaneous OBE. When I do have these now, I really pay attention to the various signposts and occurrences I have before, during and after.
Before, is when I first become ultra aware. There was just total silence, but I sensed something is either happening or about to happen. Then the "buzz" began. Last night I was trying to find a way to describe it. It's such a unique sensation. Then it came too me, It is a feeling of being "mildly" shocked, akin to a "electrocution". There also seems to be a sound, very faint at first, that sounds like a gentle ringing, like someone with "Tinnitus" would experience.
Then the sound gets longer, "Astral Winds" in full blow, and the gentle buzz, seems to become a full body "electrocution". At first this "electrocution" seems to come in waves. Once it became constant, the actual OBE soon followed. Then my "Astral sight" kicked in and I was seeing vividly through my closed eyelids.
This OBE experience also created one more test for me. MJ, my better half, started squirming in bed, or so I thought she was and that created a challenge for me to really keep my focus and stay the course. Now, there is a question that could come from that and that is "Was MJ's squirming a signpost as well?. The next day, I pondered that one too. There is no way for me to be able to answer that because she wouldn't have known. She is a very sound sleeper, but she also squirms quite a bit too. I will ask her in the morning sometimes, "if she slept okay?". She always says yes.
I am curious, how many of the experienced people here still get actual OBEs, in every sense of the word? I get them still sometimes twice a month, sometimes 3-4 days a week. For some reason, they seem to come in "waves" with me.
The important thing to make it a successful OBE, is that you must not disrupt any part of the process. You can't overthink it. You just need to be aware of what's happening and "allow" and passively observe it all.
My OBE even had a fear test in the onset. Once the electrocution became constant, there was a few seconds of total quiet, then I heard "screams" coming from 3 different directions. I thought, nice try, better luck next time, lol. The problem is, this is when most people will abort this fascinating experience and the next days tell their friends how last night they were attacked by some Demon or devilish creature

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Once you realize what is happening and why, you also realize that you are safe and because of that, you can allow the experience to continue "unabated". This is also a great time to create a intended destination as well. The only intent I put out is that I wish to be "taken" to where I need to go and "shown" what I need to see. I then trust. I feel that if I am having this spontaneous OBE experience period, I should find out why. There's always a purpose!