Hip Extension: Rest your body on your bended knees and the palms of your hand. Maintain this position as though you are parallel to the floor. Now, press the top of your head to the ground and bring your left knee to your head. Hold this position for 10 seconds and then release.
Now, repeat the exercise in such a way that your right knee comes in contact with your head. Use each leg alternately in this exercise. Do about 6 to 8 repetitions for maximum benefit.