I was playing around with twisting and found two versions i really liked. 

Start by trying them out in a warm-up.  Sitting cross legged, put your left hand on the outside of your right leg.  Extend your right arm straight, horizontal to the floor, and twist at the waist to the right.  Change sides.  Then bring your left arm to the outside of your right leg again and extend your right arm up, reaching your hand toward the ceiling for a more vertical twist.  Open your chest to the wall in front of you and look up at your hand. 

These twists are useful in all kinds of poses.  You can either hold them or exhale into the twist and inhale back to center.  Here are few:

- Come into a High Lunge with your right foot forward first and add the twists.  Do both horizontal and vertical twist to the right.  Then lunge on the other side to do the left.  

- After holding Warrior 1, stay in the same lower body position and twist from there.

- Bring feet a couple feet apart, toes pointing out (a.k.a. Goddess Pose feet ;-) ).  Bend your knees, let your hips sink and add the horizontal version twist.  Then the vertical.  If you’re holding the twists, you made need a break in between the horizontal and vertical.  So add a vinyasa (Plank, Cobra, Down Dog) or hang out in Wide Leg Forward Bend for a couple breaths. 

- Come into Chair and add the twists, keeping your lower body in position (hips and knees centered).  For the vertical twist, drop your left hand to the floor between your feet and stretch your right hand up from there.  If you’re holding and need a break in between the twists a Standing Forward Bend is nice here.

Your back will feel loose and energized with these!