5 because everything has total Waking state,
Dreaming state and deep sleep state are nothing but where mind is fully functional in waking state,
In dreaming state mind is partly functional and in deep sleep state the mind's function have paused.
Like you press the pause button on a movie.
Nothing has happened to the movie,
It hasn't stopped huh?
It's going to play again in some time.
You just press the pause button,
That's all that has happened in deep sleep.
Again after 2 hours or whatever 3 hours when you emerge from deep sleep you come back to the dreaming state.
The mind becomes semi-conscious.
That is why you have images and ideas and concepts which are of your life but they are in a very haphazard,
Weird kind of sequence which does not make sense because the mind is semi-conscious and then the mind becomes fully conscious in the waking state.
That is why Advaita says this is the 3 states of the mind.
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