Energy transforms constantly. It can be light, heat, electromagnetic fields, bioelectricity...
Western medical science is increasingly interested in understanding human energy. This recent article is about a study which showed ferroelectricity in mammal tissue. The study was on pigs, but of course it is reasonable to assume the bioelectric properties of many animals on Earth is similar, including humans.
http://www.bbc.com/future/story/2012030 ... rgy-inside
Why on earth should any animal tissue be ferroelectric? Well, as I mentioned, the living world does make use of some unexpected material properties. Bone, for example, is piezoelectric, which as it happens is another useful kind of behavior we rely on for everyday technologies. It is exploited, for instance, in pressure and vibration sensors like those in your computer keyboard, because piezoelectric materials produce an electrical charge when pressure is applied to it. It seems that bony creatures use this principle too: the electrical response to squeezing of bone helps tissues gauge the forces they experience. In seashells, meanwhile, piezoelectricity helps prevent cracks and fractures by dissipating the energy of a shock impact as electricity.
OK – but ferroelectricity? Who needs that? Engineers Bin Chen and Huajian Gao have speculated that the property might provide another way for the tissue to register forces, and perhaps monitor blood pressure. Or perhaps the property could sense blood temperature (because ferroelectricity is temperature-sensitive), or, as in seashells, disperse mechanical energy and prevent damage. Or maybe it could even act as a sort of “tissue memory” in conjunction with nerves.
Like Richard Feynman said, "There is a fact, or if you wish, a law, governing all natural phenomena that are known to date. There is no known exception to this law—it is exact so far as we know. The law is called the conservation of energy. It states that there is a certain quantity, which we call energy, that does not change in manifold changes which nature undergoes. That is a most abstract idea, because it is a mathematical principle; it says that there is a numerical quantity which does not change when something happens. It is not a description of a mechanism, or anything concrete; it is just a strange fact that we can calculate some number and when we finish watching nature go through her tricks and calculate the number again, it is the same.
—The Feynman Lectures on Physics"