The Classic Cobra Pose
Lie on your back with your knees bent and feet apart. Slowly arch your back, keeping your pelvis stable. Hold for 30 seconds, breathing deeply into your... well, not your back, because that's not really a thing.
The Psoas Major Twist
Sit on the floor with your legs straight out in front of you. Twist your torso to the right, keeping your hips stable. Hold for 30 seconds, feeling the burn in your Psoas Major.