There are four states of matter. (Solid, Liquid, Gas, Plasma)
The first three, we already know. The fourth one is plasma.
A plasma can be created by heating gas. Our soul is created using this plasma energy.
Our soul is not in the center of our body, it is in the shape exactly as our body shape. When this plasma energy reduces you will get sleep, where this energy will be restored.
Yes, you can live without eating, but you cannot live without sleeping. Sleeping is very important for all living beings. Your soul get recharged every-time you sleep. soul does not age. Only our body ages.
so after our body stops functioning the soul has still activity. but the soul cannot:
Think, see, hear, speak, or walk. Its just a energy in the formation of our body. The formation breaks after sometime or some-days. In our life we processed lots of information through our brain, they all create a pattern in the plasma formation. When we die the plasma formation still exists in our soul.
When the energy disperse into air, the formation spreads randomly, and touches other bodies and sometimes create dreams on them. That is why we see things in dreams which we did not see in our life.
So these souls are called ghosts. In real these souls cannot do anything.
Another interesting fact is, if a person woke more than 11 days or more, and dies, the plasma energy in his body will be already completely lost. So soul will not be there after the person dies.
In real there are no ghosts.