Bhagavad Gita · Chapter 6: The Path of Meditation

Bhagavad Gita 6.13

samaṃ kāyaśirogrīvaṃ dhārayannacalaṃ sthiraḥ | saṃprekṣya nāsikāgraṃ svaṃ diśaścānavalokayan ||

Holding the body, head, and neck straight and still, staying steady, looking toward the tip of one's own nose and not glancing around,

Modern context

The posture is described simply: body, head and neck in one line, still and steady, the gaze resting downward toward the tip of the nose and not wandering about. Posture and mind influence each other. A slumped body tends to bring a dull mind, and a fidgeting body brings a restless one. An upright, still body gives the mind a stable place to settle. The lowered gaze cuts down the flood of things to look at without closing off completely.