I remember in the book Astral Dynamics RB was talking about the human energy system asorbing a certain amount of enery naturally around themselves every day and as we age our energy absorption decreases. I'm guessing that some people naturally can absorb more energy than others. Also we often have engery blockages to different degrees. By doing energy work it enables you to draw more energy in than you normally do and also clears any blockages you may have with continuous practice.
Bookmarks