The activation of Shree (abundance) Yantra (tool), wakes up neurons in the brain. It is a tool, which awakens the control over all of life's aspects. Here is a video which the aspects are shown and this talks about its activation. It is the mother of all yantras and is very powerful. I will try it activation some day. Just by looking at it I am tripping :D Sometimes I see portals inside it, sometimes it looks like the directions of the energy in a torus, looked from above. Makes the imagination wild :)