sthiraḥ

समं कायशिरोग्रीवं धारयन्नचलं स्थिरः

sthiraḥ — still

Holding body, head and neck straight and unmoving, still, gaze steady and not looking about,

योऽयं योगस्त्वया प्रोक्तः साम्येन मधुसूदन

sthitim — situation

This yoga of evenness you have described, Krishna — I do not see how it can hold, because the mind is unsteady.

आयुःसत्त्वबलारोग्यसुखप्रीतिविवर्धनाः

sthirāḥ — nourishing

Foods that increase life, clarity, strength, health, ease and satisfaction — juicy, rich, nourishing and pleasing — are dear to those of clarity.