I keep having this recurring dream but I don't know what it means?

I keep on having a recurring dream where I can fly but not properly, it's more like a really high jump, but when i'm in the air I sort of float slowly back down but it's really hard to control my movement in these dreams, also in these dreams I'm often running away from someone I can't see or trying to run to somewhere but I just can't get there. I have no idea why I have these dreams so any sort of explanations would be brilliant