Many Spiritual belief systems around the world believe there is an energy field around every person. I have found one explanation for this. The entire range of movement your body has creates a possibility or quantum field around each person. This field is connected to the nervous system and consciousness via the physical energy of electricity. Around every person you encounter there is a possibility for them to act violently or lovingly. The electrical energy relating to your thoughts in the brain suggests a response to this person's energy field.
If you look further beyond your body you see a different omnipresent energy field that interconnects the possibilities of the entire universe that we all interact with. There are many levels and ways to look at the human energy field.