It starts with supine, pelvis and spine neutral. Knees flexed, feet abducted hip-distance apart on mat. Arms long by sides, palms down. Inhale sliding shoulders up toward ears, elevating scapulae. Exhale and slide shoulders away from ears, lightly pressing palms into mat, depressing scapulae; imagine inferior angle of scapulae being gently pulled down the back and in toward the spain in a V shape.