The matter of the heart and the NADis that Vedanta talks about is one such. By knowing about them there is not going to be any gain of spirituality; nor is there any loss by not knowing about them.
There is a great difference between the sushhumnA and other nADis that Yoga ShAstra talks about and this (matter of the heart, etc.).
The Yoga-shAstras say several things about how you have to practise, how you have to generate the activity of prANashakti in the nADis, make it ascend or climb, and you may reap such and such results. Among these there are also included some for the growth of spirituality.
On the other hand, we cannot do anything with the heart or nADis or the central gate, enunciated by our Vedanta shAstras and obtain any result.
It all depends on his life style, upAsanA, self-enquiry and accordingly the JIva-bhAva automatically goes and joins thosenADis or the central seat of the Atman.
That is all.