The dreams in the first stage of our sleep keep our senses still employed and the mind active on that account, for the activity of the mind is generated by the operations of the senses with their objects. Hence neither the tired mind nor the tired senses derive the complete rest they need, until gradually the veil of Tama grows dense and shuts out even the mental reflections of objects from their view. This stops the operations of the senses which then are absorbed by the mind whose offsprings and agents they are, for the senses cannot exist when they are deprived of their function of cognition. The same thing occurs with the mind, for its activity, caused and sustained by the activity of the senses, is the only reason for its separate existence. With the loss of its function, therefore, the mind loses this separate existence and is absorbed by the Ego. The Ego is in the same way absorbed by Consciousness, for the Ego is dependent on the Mind which sustains its existence of self-consciousness. And then Absolute Consciousness, with the passive germs of the Ego, Mind and Senses merged in it, is absorbed in its turn by the Soul and dwells in its realm until the senses have rested sufficiently. In the depth of this dreamless sleep state of our consciousness, Tama gives place to the reaction of Sattwa which is very pure during this state. This dreamless sleep may be called a negative trance state. When we awake, through development of the Rāja Attribute, we feel not only thoroughly refreshed but also in a state of mental harmony, a happy mood of mind. We also feel that we were, during that dead sleep, in a state of utter oblivion of everything. We feel we forgot then even our own existence, feel that we were not conscious even of our own self, that we were in an absolutely happy state, happy with happiness itself. We know of this condition, when we awake from it, by inference from the happy state of our mental mood, induced by the abstract impression of it upon our consciousness which was present then in its pure state. The cause of the refreshment and new strength of our body and senses is this dip in the Essence of the Soul, the source of all energy. The physicians try to put their patients into this deep sleep in serious cases of illness, knowing by experience that deep sleep is a quicker and more powerful restorer of health than any medicine, but they do not know where lies the balm of sound sleep.