Yoga

[BillionNamesofGod]

I was just wondering if anyone knew much about  siddhis
and sanyama.

These kind of describe Astral Projection as a psychic power that is developed through Yoga.

I was just wondering, these knowlege seems very old, but I've never seen any of the saying or methods of Yoga/Meditation to aid Projection ever been mentioned in a modern context.

Has anyone got any info on these methods to aid OBE?

Just that it seems on context, ie. all about relaxation and breathing, which are key techniques described in Astral Dynamics book, but these moden books never mention Yoga Terminology.  Are we missing out on older more deeper knowledge?

Thanks.