Take this body position so that your legs were close to each other, and the arms were separated at the side or behind the head. Straighten your back. Don't set your feet, even if it's better, otherwise you will not be able to effectively work the core muscles of the waist. The work will start the buttocks with the hips and a full small circle only one waist you will not learn.
Not to hurt your back, don't do shocks during torsion of the Hoop. Movements should be calm and rhythmic. Also do not make movements back and forth. Twist the Hoop should be smooth rotational movements. As well as the thigh, buttocks, Breasts, too, should not be involved. Work exclusively waist.
To do the rotation wrap should only fasting. It would be good in advance to do a couple of breathing exercises. It helps to expel from the stomach of excess air, and also gives the muscles the ability to better evaluate.
Any breathing exercises. For example, you can try this exercise: make a long exhalation "to the diaphragm" as if you want to inflate a huge balloon. Just don't do this specially before the big breath. Further, through the nose take a prolonged breath. In conclusion, sharply exhale from lungs all air. Repeat this exercise should be 3-4 times, making between repeats pauses.