How exactly is our energy bodies connected to our spiritual bodies/soul?

For instantance, i've wondered why some people refer to energy work as "spiritual development". Are we training our spirits?

And where does "natural" ability come from? What I mean is, how can some people have naturally strong chakras than others? Does it have to do with the incarnating spirit, or just the energy body or our the two connected? I.E to have a body, one must have a strong energy body, to have a strong energy body, one must have a strong spirit.

Please note that I am only using the term "strong" lightly. I don't mean like how much power a spirit has, rather its age, attributes, development, etc.