The Cosmos in the universe is composed of energy. Every syllable of a word let out in the ether is a carrier of energy and can be used to tap specific forms of energy in the atmosphere. Mantras are incantations hailing the Gods thereby stimulating the necessary energy flow. This is mentioned in the following shloka. DAIVADHEENAM JAGATSARVAM MANTRADHEENAMTU DAIVATAM Meaning that, the whole universe is ruled by the Devas and the Devas are under the power of Mantras.The deities are also a part of this energy world,Shiva being the supreme source of energy and Shakti is conscious form. Different energy forms called the Panchabhootas include the ether, air, water,fire and earth elements. The existence of these elements in the human body and as well as in the atmosphere facilities the flow of energy between them. Imbalances in the body-system Malfunctioning of the body system is caused by disproportionate energy levels in the system. Each organ has its own consciousness, and is capable of emanating and absorbing a certain amount of energy. Improperiety in this process (of radiation and absorption ) can lead to abnormal activity of the organ or the organ system and can manifest as a disease. Mantras need to be chanted -In rhythm, - With a proper intonation(pronuciation)and - Proper resonance(pitch). This is necessary to invoke the full potency of the word so uttered.