My first voluntary OBE started this way. I was swimming uphill in the air. In a moment of lucidity I noticed how ridiculous it is and then it started. I had no vibrations though but entire 'Kundalini' energy going through my torso. Then I was in my bedroom and lifted out of my physical body going to the ceiling. I did not know what to do and turned around looking down at my physical body 'asleep' with eyes closed (a sight I never forget). Then I decided that this is enough for a short trip and dived down again into my body into the breast area where I also experienced my own breath for a little moment. Strangely I got into another dream with a false awakening after that. Only then I really woke up. There is much more to this experience, this is the short version.