Grade III (severe): A complete tear in your muscle that causes severe pain and swelling and you can't bear weight on that leg, making it difficult to walk. You've also lost more than 50 percent of your muscle function. These injuries are less common and may need surgery to repair the torn muscle. They can take several months or more to completely heal.
Start in a runner’s lunge with right leg forward, right knee over right ankle and back leg straight. Walk right foot over toward left hand, then drop right shin and thigh to the floor, making sure to keep right knee in line with right hip. Allow left leg to rest on the floor with top of left foot facing down. Take a moment to square your hips to the front of the room. Hold here, or hinge at hips and lower torso toward floor, allowing head to rest on forearms. Hold for at least 30 seconds, then repeat on opposite side. You want to feel a moderate stretch in the outside of the right thigh, but if this pose hurts your knees or feels too uncomfortable, stick with Thread the Needle.
I think you should mention that for some people, stretching is not the solution and that it will deteriorate their posture. Some people need stretching, but most people I know need to strengthen their "overstretched" hip flexors. Many people can't do a single hanging leg raise. Check this site if you want to know more about the importance of hip flexors bit.ly/Unlock_Your_Hip_Flexor Report
Some stretching basics: you should feel a stretch, but not pain. If it really hurts, contact a physical therapist and figure out what’s really wrong. If your hip flexors are truly tight, a few weeks of doing these stretches should help you feel better! You should notice relief, so if you’re not, you may have something else wrong besides “tightness,” or you might need to address what you’re doing the other 23 hrs and 50 minutes of each day.
The hip rotators not only rotate the thigh on the pelvis but more functionally rotate the pelvis on the weight bearing fixed thigh. Activities such as swing a golf club, and even just walking require some rotation of the pelvis on the weight bearing leg. While we don't need that much range of motion to walk, activities such as running, dancing, tennis, and many other sports can require more hip rotation.