Chinese medicine and Ayurvedic medicine are only two examples of alternative medicine describing the body as an energy network as important than the blood vessels and the lymphatic canals. As much as the energy flows in the body, it radiates from it in layers.
Take an electric cable as an example. The courant flows inside of it. At the same time, the electricity creates a magnetic field around it.
The energy field around a person gives a portrait of the person at the time the reading is done. This picture may reveal things on the energy, physical and emotional situation of the person.
After practicing for a few years, I am now able to feel the energy field of your body and to give a reading of what I perceive. I recommend that you avoid receiving techniques that may affect your energies like Reiki for at least before a reading. It makes the reading very difficult. It’s a bit like if you want to see the bottom of a lake that you just walked thru. You must let things settle a bit to make things clear.