Your will and imaginaton direct the subtle energy that is you. You are not limited to conventional (frontward or backward) directions. Notice what happens as you adopt the role of observer, focus and move inner energy differently. You raise its velocity, feel physically energized and require less sleep.
As an exercise, mentally visualize yourself turning around without moving the physical body. Feel the joy and other sensations associated with being free like the wind. Suddenly, you feel them. You are wind, air and flow. You mentally direct the subtle energy that is you and move it effortlessly. What do you find?