The Energy work you do,
Where does Energy, Qi, come from?
from the food you eat?
from the your spirit? (your virtues, your morality, anything unphysical)
or from your external environment, the Sun, the Moon, stars, Nature?
My guess:
depending on whether you open your chakras,
if you don't, the energy comes from first two.
if you do, the energy comes from last one as well.