The subtle system shown below is also known as the tree of life. 
  Also the ancient drawing of the Subtle system. more
   
 
Closely linked to our nervous system, it determines and allows us to perceive the state of our energy channels and our chakras. This mechanism, awakened and mastered by the practice of Sahaja Yoga Meditation, becomes a wonderful tool with which to develop our personality. In fact, it works on all levels of our being:- spiritual, physical, mental and emotional. We can detect the presence of the subtle system in us by a cool breeze or tingling sensation localised on different parts of our hands and on our fingertips. It is very easy to master and we can soon become experts in decoding the different sensations we are able to feel on our fingertips. In this way we can learn how to balance the chakras and bring ourselves into a state of well being.
The subtle system
The nervous system
Once this mechanism is awakened, you can feel it on your hands. Each energy centre can be felt there and decoded (here, represented by the colour of each finger). The nervous system gives us information on the state of our physical, emotional and mental being. It mirrors the state of our subtle, spiritual system.

top
Also to show that Sahaja Yoga is not making it all up see the ancient drawing of the Subtle system and the chakras. more