The mind of the body gets heavy by the weight of the bad and sin action (burae karma) memories. Good karma memories does not harm the mind as they do not also get memorised in the mind of the human body for long. The kundalini shakti has its own functions like absorption of energy which gets generated by soul inside heart with its fire by burning of elements eaten by food. This energy is absorbed by kundalini through urja nadi, when the body is awakened and later onn supplied to mind through shusmnaaa nadi when the body is at sleep. The soul require oxygen for its buring and that is why life dose not exist without oxygen. This is only the reason the heaviest temperature is near the heart and also called as Brahma sthanaa. The soul resides here.
The second spiritual organ is the mind which is also known as mental organ in scientific language. Modern science is still on its research itself about mind and internal organs of human body. The vedas have full data regarding the spiritual organs and their working. Other than the vedas every book could be called as Religious book only.
The vedas are only the spiritual books on the planet. The mind lies in the center of the skull. It is a point shape (bindhu swarup maanahaa) organ. The organ soul is like fire (jyoti swaruup aatma). The third organ is known as Kundalini shakti which is like a snake (saarap kae sammanaa) and is the goddes of knowledge which has to be awakned inside human body, as other than human body this awakening process is not at all possible.
The kundalini only takes mind and soul to achive births on the planet. The body is made up of five elements. By the space element Nadis are formed. The nadis are packed up by 10 types of Rudra vayus inside them. The left part of mind is connected by ieda nadi, the Right part of mind is connected to pingla nadi, the lower part and the back part of mind is connected by shusmana nadi. The front part is connected by brahmana nadi while the other end connects the heart. The emotions grnerated by soul reach the mind through this nadi only with the help of Rudra vayuas.
The spiritual part only makes up the working of the physical part. The whole of upper part of mind is connected to brain. The emotions generated by heart reach the mind where they get converted into a thought. The thought is passed onn to brain for thinking process. On the brain there lies crown chakra (sahnsdahara chakra) for thinking process. Each hair represent the urja dhara.
The flow of energy takes place inside the nadis (urja dharas) only. The mind attains the energy from kundalini at the time of sleep and spends it. This energy is only used by mind for its daily working and the cycle goes on in every living creature of the planet. At present time, human is passing through the big problem of stress and depression which are very harmfull diseases of mind. Due to this only the human body faceses death. The emotion of fear when reaches the mind the size of mind gets enarged due to which only heavy pressure comes on the kundal of the kundalini shakti.
This shakti rushes through shusmana nadi and holds the mind inside its mouth and rushes to heart to catch hold of soul and go out of the physical body. The ten gates (das dwara) are concected to heart only. Ravana explained this process of death at the ending of satyuga. He told the brahmins that human will be performing bad and sin action till the time of kaluga, so it will be better to give the dead body to fire element because the exit of soul depends upon the karamas performed by the body and it is very painfull process as it is made of fire element which touch is not bearable physically.
The gate of removal and the time will depend upon the sin and bad actions perofmed by the body. Who ever will die he will be your relative and after the shifting of mind the energy flow inside whole body is stopped due to which only every physical working gets stoped and body facess death. Due to pressure created inside brahmna nadi when the kundalini enters the nadi after catching hold of mind the burning of soul is effected and it stops all actions.
It takes around 3 hrs for the kundalini to reach the heart through brahmana nadi and within that time only Ravana sugested the learned brahmins of that time to give dead body to fire element so that every thing gets distroyed sooner and the soul will recive next birth. He very well explanied the law of nature regarding death. (karmo kae bhog hi aatma ko janmo kae chakravyu mae ghumate hae). He explained to people the death is the only painfull phynomina on the planet as the pain is realised at the time of exist of soul.
It is very well discribed in Islamic religion that Kabraa mae sara hisab kitab ho jata hae. This is the process how death occurs and mind is again formed in the shape of a body for the fullfilment of the oath taken from jyotirbindhu lord shiva for the growth and progress of whole nature. Science and technology gave plenty of comferts to human body but it is unable to give enjoyments of mind as it is only present in vedas. The cycle is going and the souls are entangled very badly in the cycle as they are very far from knowledge of their respective oath and its fulfillment as well as the time is passing away.
It is wonderful how much time good people spend fighting the devil. If they would only expend the same amount of energy loving their fellow men, the devil would die in his own tracks of ennui.
How dose Death occur in Human Body