Lot of gurus preach to take breath in chest, in this process chest will expand and stomach will shrink while inhaling. They give reason that lungs have oxygen absorbing capacity so we should breath to lungs/chest.
And lot of other gurus preach to take breath in stomach, in this process stomach will expand while inhaling. They give reason that stomach breath is natural as all new born child do stomach breath so we should also.
And lot of other gurus preach that one should not guide breath, breath itself will find its way so we should not worry about chest breath or stomach breath. They ask to just pay attention to breath.
Which one is correct way of breathing and why?