What is "energy work?"
Energy, itself, is the capacity or power to do work (science!)
I also see energy as the non-physical beginning of everything that we can see, hear, touch, taste, smell in the physical world.
It's that electric impulse that is:
a thought, 
an idea, 
a craving for chocolate, 
the attraction that you may feel for a potential lover,
the urge to take one turn over another,
a possibility.
Every building, relationship, birthday cake, r&b song, baby, puppy, plant, came from this intangible source. The past, present, and the future are all created with energy. Everything tangible starts as potential; starts as something un-manifest.
This is the source that I can connect to, read, move and shift.
What I, "work" with.