Flying under pressure

In my dreams I often get to fly. However, I always seem to have some element of gravity that I can't let go of - it feels as if my body is a day old helium balloon that hovers about 2' below the ceiling. I usually get to fly if I'm trying to get away from danger. So far, I've had enough helium to escape the evil imposter spirits posing as my family or friends- just as they come to get me.