“Warrior I strengthens the legs, opens the hips, lengthens the hip flexors and adductors. The pose builds stamina,” Crandell says. “All of the standing poses are highly focusing for the mind because they are demanding. Demanding postures tend to require our full attention.”
The lunge and two standing poses that come earlier help to prepare the hips for Warrior I. Warrior I is harder than Warrior II and Triangle for most people. And Warrior I helps prepare the shoulders for the Handstand and Wheel to come.