The energy that commands and controls the mind,body and heart is soul. It is the form of energy that resides in the body and controls it. Soul is said to be the ingredient of God. God is also nothing but the energy that controls the Universe. Soul is the part of the energy that what is so called God which has the power to operate body.
Soul is said to be energy because it has no shape,size but has weight. This is something that persist inside the body which controls the heart and body. How we move? What makes us feel hungry? What makes us thinking? How brain functions? How is mind controlled? All these questions have a unique answer that there must be some energy that controls and signals the body.
Every living being is said to have soul.Whether human,insects,birds,animals and all those that can think,move. It is the soul that controls their body and heart. The situation of comma is when bran starts dysfunction but still the being is alive because the soul still remains in the body.
As the body requires energy to be healthy soul too requires useful nutrients.Energy of good Karma,devotion,spirituality,meditation are the ingredients that a soul requires. Soul is said to be pious and pure. Soul is free from hallucination,jealousy,hatred,happiness,glory,defamation and everything.Heart functions to control pulse and brain to think and soul controls both of them.
Soul is like the rays of Sun which is also an energy that provides required constituents to the living beings on this planet and Sun can be metaphorically compared as God, the constituents of all energies which controls the Universe. The rays are originated from Sun and fills in it again.
Energy is never lost. Once the body becomes useless this energy transforms into another form and leaves the body. This transformation leads to the death of the body but the soul never dies. Either it changes it's shape or imbibes in its origin or resides in another body and it results into reincarnation. When the soul is left free in the Universe it is either called ghost or angel.
As soul is energy it is our (brain's) duty to think in its utilization. It can be used or misused. It depends on the brain and body how and when it can be used. If it is used in good work the living being can be called saint and if it is misused living being can be called as sinner.
The question is always asked where is God? God is nowhere but resides in the form of energy or soul inside our body. It resides in every living being. This energy is pious,magical,pure. To worship soul is to worship God. Keeping faith and devotion in soul is to have faith and belief in ourselves and it results into positive attitude that what a living being always want.