I'm going to ask for help again, but first I'd like to achieve a consciously induced projection. I've had vibrations during waking hours, too. I guess I just didn't realize it, or regretfully, didn't always pay attention to them (they seemed as annoying as ringing in the ears). In some cases it has happened for more than a few seconds, but never as long as a minute. Apparently, disturbances in an electromagnetic field can also give you that same feeling, too. Perhaps you did have a UFO hovering over your home.
