Healthy belting requires ultimate breath control to avoid damage to the cords.
First, no pushing. Simply allow. It requires a lot of energy and effort to belt safely. This effort and energy is felt in your abdomen, pelvis, ribs and back. You should feel no tension in the throat. The throat is very open and the tongue is high in the back of the throat. This doesn’t mean you will feeling nothing in the back of the throat. But, you should have no pain, strain, tickle or cough-like feelings.
Belting high notes should be done with thin cords (although it may sound like some singers are belting in the chest voice). The volume of a good belt sound is no louder than the volume of your loud speaking voice.
With good cord closure (compression), allow some air to escape with your high note. In other words, belt “hey” while allowing the “h” to help you let some air leak through your cords.
Keep your jaw relaxed and your mouth wide open like biting into an apple, or just like the feeling before a yawn. Again, the tongue should be high in the back of the throat with the tip sitting behind the front bottom teeth, and the soft palate is lifted.
If you feel tension at the back of your tongue then you are straining. Start again with a relaxed high tongue and open mouth and throat.
Staccato exercises in your high voice (thinning of cords) are great for stopping the breath, gaining control, and prepping to belt and sing rock.
This means your breath is drawn down deep into your lungs, and your abdominal muscles, back muscles and rib cage muscles are engaged in the effort of controlling your breath.
And don’t forget, you should always warm up and warm down with lip rolls, sirens and tongue trills.