That's how I feel when I go into the "letting the universe do me" mode instead of feeling that I have to do everything.
It's a great feeling.
A sort of non-interferening state of flowing with the tao. I think that even if you just sit on the sofa and "is" for a while, you're doing yourself good.
At the NLP seminar we'd have periods where the instructors would do a guided relaxation session and have a few minutes for the unconscious doing whatever it needed to do. It was a really good feeling. Just getting out of the way and saying, "Ok, buddy, this is the time for you. Go for it. I won't muck around in what you're doing."
With that and a whole bunch of other things going on, some of the weirdest and most wondering involuntary things started happening. Some were really freaky, though. 
