Regular and rhythmic breathing gives health to body and mind both. Inspiration comes from above, but as a light. It is the work of the mind to receive it. If the mind is not ready to receive it, the inspiration will come but will not be realized. It is just like the difference between the gong of metal and the gong of wood. The former will resound, the latter will not resound. It is not the fault of the one who strikes the gong, it is the gong itself which does not resound. So it is with the mind which is receptive to the inspiration and the mind which cannot conceive it.