nothing really moves in Lucid dreams they just change, since thats how your subconsious perceives the waking world. Technically you dont walk, run or fly, you just change the scene around you, this is the key in controling your dreams since you control the scene. In flying all you do is make the backgroun look like a sky from a birds eye view and change the scene, since there is no such thing as movement in lucidity. You only feel the wind on your face since you associate feelings with the way the scene changes, hence if your "flying" or making the background change to what you think flying is, you'll also simultaneously feel the "wind" on your face but thats just your feelings reacting to the scene, basically your telling yourself if I was flying how would it feel since it looks like Im soaring through the sky like a bird. This thread will proabbly change everyones theory on lucid dreaming since Ive managed to break it down for people a lil better they'll have a greater outlook on dream control.