Go here for more details: http://exercisesforinjuries.com/how-to-get-more-from-your-bridging-exercise/
In this video, Rick Kaselj shows the four ways to Get More From Your Bridging Exercise.
If you are looking for a program to help you targeted your gluteus medius, then check out Gluteus Medius Exercise program, here:
Rick Kaselj of http://ExercisesForInjuries.com
You can go here to watch the video – https://www.youtube.com/watch?v=KfSFRvkyunY