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Proper diaphragmatic breathing involves distending the abdomen during inhalation. Lie comfortably on your back and put one hand on your abdomen and the other on your chest and inhale. If your chest rises first, you're doing it incorrectly. The abdomen should rise first and continue rising upward. Inhale in one continuous and effortless motion. When you exhale the chest should deflate first, followed by the abdomen, again effortlessly. it's important to be calm when doing this. Do not exert too much effort in doing so.
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The movement of the diaphragm affects the size of the chest cavity by when you inhale the chest cavity enlarges, but when you exhale the chest cavity becomes smaller.
When you inhale the volume increases, because the chest cavity expands to hold your breath.It increases.
inhale
If you have a heavy chest feeling that is not tight and you are having no breathing issues, it should still be checked out. It could be something as simple as acid reflux but it could be more severe.
the chest cavity expands.
When you inhale your rib muscle and diaphram contract and expand the chest cavitie. When you exhale you rib muscle and diaphram relax, reducing the size of the chest cavitie.
The air pressure in your chest cavity increases when you are exhaling. For air to leave your lungs, it must be at a higher pressure than the air outside. Your diaphragm pushes up against your chest cavity causing the space in your lungs to get smaller. If the volume decreases, the pressure has to rise. Don't believe me? start exhaling, then close your mouth. Your cheeks will puff out because the pressure inside is greater than the pressure outside.
Take him to the doctor.
you breath in as you inhale breath out is exhale