The sun is the centre of the solar system and Kundaleeni is the centre force of the body, it bounds the body and soul. It is related to mind, Chakra, soul and material body.
The place of Kundaleeni is in between the gender and the anus. We can’t see or touch this force because the energy level is different but we can feel it when we bring back the conscience to our mind through the technique of PrathyaHara. When we go through the meditation, Dharana and PrathyaHara, we feel it like a frog moving on our back. The next stage of movement is like a snake and after that Kundaleeni starts to awake from the bottom and moves through the circle-centre of the body to the prime chakra (sahasra-rapadamam). The first time it awakes for a while it has the color ivory and when it lasts at least four seconds the ivory color may change in white. The energy can be only be awoken for maximum of one minute. Most of the ancient teachers or sages like Ramana Maharshi, swamy swalmaraman, sri pahamjali maharshi, etc.. may be in between 6 to 15 seconds.