If we want to get into the root of all energies, we need to look at the Sun. Sun, which not only radiates energy, but works as a symbol of bringing holistic light in our lives.
Most of the ancient people used to believe that every human body is a universe in a smaller scale and the properties and governing rule remain same inside the human body also.
They used to believe that such a solar system exists inside the body, which radiates energy for all our activities If we shift our focus to the nature, we can find plants, which could never live without the energy radiated by the Sun. Similarly, every human being has been continuously striving to harmonize the internal and external energy levels even without knowing as this is done by the internal mechanism, of which most of the human beings are now even aware. The mismatch creates disorders, it may be mental or physical or even both. If we want to compare with the Sun, any human being also radiates energy called the aura; the magnitude is definitely much lower than the Sun, but again it cannot be ignored.