the only separation from god is the delusion of self
This creation of artificial vehicles, called nirmana cittas, is done by the yogin by samyama on the mahatattva. The mahatattva is the reservoir of all cittas, or minds. All individual minds are emanations of the mahatattva, or the Cosmic Mind. By drawing sustenance from the Cosmic Mind, one can act in a superhuman manner. That superhuman method which is adopted by the yogin in such a state is the peculiar samyama he practises, by which he can split himself into various personalities and undergo all the karmas simultaneously, so that there is an exhaustion of them by a quick experience. This nirmana citta is a term which signifies many aspects of this method adopted by the yogin. There are references in our scriptures which make out that yogins can appear simultaneously in different places, not necessarily for the exhaustion of the karmas, but for other purposes. Here, this particular sutra seems to be pinpointing the aspect of exhaustion of karma, for the sake of which there is the manufacture of what is known as the nirmana citta. The body that is manufactured out of this nirmana citta, or mind, is called nirmana kaya. This has a different meaning altogether in Buddhist psychology, and we should not mix up one with the other. Simply, literally, it means ‘the manufactured body’; that is nirmana kaya. And the manufactured mind is called nirmana citta. The sutra here explains the ways by which karmas by yogins can be exhausted. But, as I mentioned in passing, these nirmana cittas can be created by yogins for other purposes also, not merely the exhaustion of karmas.
but second physical body is another cup of tea. It would show split personality
in a new light. 
Originally posted by PapagiorgioCZ
reply to post by biggmoneyme
Well, than it's God's idea to make us in this way. How could it be bad thing?
The Russian Psychiatrist Olga Kharitidi published her direct experience of this phenomenon in the Altay Mountains, where a shaman merged a stream of his consciousness continuum or 'spirit' with hers.[4] This phenomenon is a variation of the spiritual discipline of phowa (Tibetan: 'pho ba) and is often rendered as "spirit possession" within English anthropological discourse
Originally posted by PapagiorgioCZ
What siddhi would I like? I'd start with HEALING and LEVITATION...
but...I would need a complete knowledge of disease, it's causality etc. to heal what is ment to be healed and what is good to be healed. It's not so simple as well.

Actually I've stop reading when I saw words like theosophists and Blavatsky.
you know what will they get.