“Wakefulness – If ten people fell asleep and they came awake, when they come awake, all of them will not be equally awake. One person may be instantly awake, another person may take two minutes, another person needs a strong coffee, otherwise they will not wake up. Like this, there are different levels of wakefulness, too. This is jagruti. This wakefulness is not consciousness.
A Dream State – The next dimension of consciousness is called swapna, which means a dream state. A dream state is far more vivid than the wakeful state for most human beings. It is like going to a cinema. This dream state is considered a more powerful state than jagruti. Jagruti or wakefulness is important for performing action in the world but for human consciousness, in terms of profoundness of experience, a dream is always more profound than walking on the street.
A Dreamless State – The next state is called as sushupti which means a dreamless state, but there are dimensions of consciousness that you are aware of. It is a totally dreamless sleep state, but you are aware. There is no picturization or video running in your mind, there are no people or words, but you are conscious in your sleep. This is a very powerful state if you really want to manifest something in your life. This is something to be explored.
Consciousness – The last state is called turya. This is consciousness, where there is no memory involved of any kind. In the Yogic sciences, we are looking at consciousness essentially as an intelligence beyond memory.
Consciousness is a dimension beyond the physical. How conscious we are is different from person to person. You are alive – that means you are conscious. But so far, you only have minimal access. As your access improves, your sense of boundary expands. If you become identified with consciousness, you will experience everyone as yourself. This is what Yoga means.
You are still rooted in the body but you are beginning to touch a dimension beyond, so that your experience of life is not limited to your body – you experience it as a larger phenomenon. It means you experience all the people around you as a part of yourself. Expanding the sensory boundaries in such a way that if you sit here, the entire universe is a part of yourself, is Yoga; this is raising consciousness experientially.
The degree of your consciousness-raising determines the scale and possibilities of your life!”
https://isha.sadhguru.org/