I used to study tetrahedrons. A book i read when i was about 18 spoke about the spiritual power and meaning of the geometrical shape. I found an interesting site that relates to what i previously read years ago. Check it out: http://www.crystalinks.com/merkaba.html
Merkaba, also spelled Merkabah, is the divine light vehicle allegedly used by ascended masters to connect with and reach those in tune with the higher realms. "Mer" means Light. "Ka" means Spirit. "Ba" means Body. Mer-Ka-Ba means the spirit/body surrounded by counter-rotating fields of light, (wheels within wheels), spirals of energy as in DNA, which transports spirit/body from one dimension to another
In modern esoteric teachings, it is taught that the MerKaBa is an interdimensional vehicle consisting of two equally sized, interlocked tetrahedra of light with a common center, where one tetrahedron points up and the other down. This point symmetric form is called a stella octangula or stellated octahedron which can also be obtained by extending the faces of a regular octahedron until they intersect again.
In his books, researcher and physicist Drunvalo Melchizedek describes this figure as a "Star Tetrahedron", since it can be viewed as a three dimensional Star of David. By imagining two superimposed "Star Tetrahedrons" as counterrotating, along with specific "prana" breathing techniques, certain eye movements and mudras, it is taught that one can activate a non-visible 'saucer' shaped energy field around the human body that is anchored at the base of the spine.
That guy Drunvalo has a cult following. Really interesting stuff. If you don't believe me, look him up.
There are 17+1 breaths, where the first six are for balancing the polarity, the next seven for proper pranic flow through the entire body. The further breaths are for shifting the consciousness from 3rd to 4th dimension and finally the last three breaths is for re-creating the rotating Merkabah within and around the body. The last breath is not taught. Once each day, enter into this meditation, until the time comes when you are a conscious breather, remembering with each breath your intimate connection with God.
Supposedly this guru has discovered a method of controlling his breathing in a sort of pattern and meditation that allows his spirit to travel or skip realms. Sort of like a yoga that sits in the same position for days, weeks, months even without food or any apparent movement or function until his spirit returns to his body.
Flower of life: