SP is a common thing for me...and it has almost always been frightening. Usually when I try to wake up, I hear a menacing voice, or I'll see a scary figure or image to keep me from waking.
One time during SP, I felt myself rise above my body, and saw my legs start to elevate into the air...Eventually I was looking at my sleeping self in bed. I got scared and forced myself to wake up.
I've become an expert at waking up from SP, since it happens to me so often...I wonder though, if I could have continued to remain outside of my body, and travel outside of the area I was in.
Too scared to try though!