We do not yet understand these fields fully, though they are clearly complex and challenging to measure. The electric field is detectable by Kirlian photography. More interesting is the bio-magnetic field. This is more likely to be what is sensed by aware healers. Elementary physics tells us that where electricity flows, a magnetic field is induced.
Sensitive instruments can pick up the heart's magnetic induction field from several yards away.
But the really exciting work is being done with quantum effects. As technology has advanced, we can now encounter them in reality. Beyond the physical manipulation and realignment of these fields, as in aura work, Reiki, acupuncture and so on, there opens the vast possibility of bio-magnetic and resonance medicine. Devices already exist which can detect the radio-signal of tissue disorder and stressors. Treatments can even be matched to the disease and a harmonious signal obtained to confirm efficacy.