7 Therefore, the PRODUCER shall have the right to manufacture, publish, sell by way of any medium (audio cassette, CD, DVD audio or other existing formats) or via online communication networks (Internet and others), and communicate to the public in any format the phonograms defined in Article 1.
This is how are lungs operate. Inside our bodies, at the base of our lungs there is a membrane called the diaphragm. When you inhale, your diaphragm contracts and flattens out, increasing the volume and decreasing the pressure in your chest. Because you have more room air gets sucked in through your mouth and nose and into your lungs, just like it did in the balloon, and then your lungs fill with air.
If you're having trouble feeling your diaphragm, lie flat on the floor and place a moderate weight on your stomach area, something like a large book or large pillow. Push that weight up using just the muscles in your stomach. Simultaneously draw air into your lungs to their full capacity. Now, sing. The muscles you're using are your diaphragm.