The Essence of Life is a very unique energy.  When you learn how to call forth the Essence of Life, you are actually summoning spirit into the physical form, into your body.  As you do this, as you familiarize yourself with this process, you can receive and then guide the Essence of Life to different parts of your physical body, bringing balance.  Dissolving old limitations that may be held within the physical and energetic body in those different areas.