Warrior I (Virabhadrasana I)

You stand on a tightrope — feet in one line, which makes squaring the hips impossible.

You let the back heel peel up or the back hip swing open sideways.

You arch the lower back and flare the ribs as the arms reach overhead.

You let the front knee cave inward toward the midline.

Keep the feet on two separate tracks, roughly hip-width apart, so the hips can actually square forward.

Press the outer edge of the back foot down and feel the back leg firm like a pillar.

Lengthen the tailbone down as the chest lifts, so the reach comes without a lower-back crunch.