Blitzkreig said:
Why are you so quick to insult? We have healing mantras, methods for invoking elements, methods for achieving money, but suddenly using energy for fuel is off the table. Perhaps for the entirety of your fuel requirements, but partially? Dr. Jack Kruse already explained how sunlight increases the electrons in the cell and can offput a certain degree of energy required by electrons sourced by food. I suppose if one could invoke enough energy, they could feed themselves, but it would require a tremendous effort that wouldn't make it really worth it.
Food is a source of prana, and is the life force and we take it in order to sustain ourselves and not die but if one increases their life force tremendously or has another form to sustain themselves, then perhaps, but of course I wouldnt take my chances.
However, even though the gods do eat, I personally do not think that they are at the level were if they dont eat, they die. I believe they have the raw power and essence to keep themselves alive without food, or in the least, able to survive without it for a long time.
This is a different case for human mortals though.
The idea that absorbing a huge amount of energy to atleast partially sustain and keep one going is not implausible but I dont think its worth experimenting on. We just dont know. But I dont think the idea or question is ridiculous, like BlitzKrieg mentioned.