The following 2 Exercises will Rotate the Hips External. I am curious if anyone knows any stretches to Rotate the Hips Internal (opposite direction).
The 90/90 stretch:
puts one hip in internal rotation and the other in external rotation.
I think dynamic stretching may be better. This video shows some martial arts inspired dynamic external/internal hip rotation stretches: VAHVA Fitness: Intelligent Hip Mobility Training.