In popular New Age culture, "energy" has somehow become a noun unto itself. "Energy" is considered to be literally like a glowing, hovering, shimmering cloud, from which adepts can draw power, and feel rejuvenated. Imagine a vaporous creature from the original Star Trek series, and you'll have a good idea of what New Agers think energy is.
In fact, energy is not really a noun at all. Energy is a measurement of something's ability to perform work. Given this context, when spiritualists talk about your body's energy fields, they're really saying nothing that's even remotely meaningful. Yet this kind of talk has become so pervasive in our society that the vast majority of Americans accept that energy exists as a self-contained force, floating around in glowing clouds, and can be commanded by spiritualist adepts to do just about anything.
When spiritualists discuss energy, don't blindly accept what they're saying simply because energy is a word you're familiar with, and that sounds scientific. In many cases, their usage of the word is meaningless. When you hear the word "energy" casually used to explain a mystical force or capability, require clarification. Require that the energy be defined. Is it heat? Is it a spinning flywheel? Is it an explosive compound? Is it food? These are examples of actual ways that energy can be stored.