Gastric enlargement forces the diaphragm into the chest,
decreasing lung volume, and also compresses the blood return to the heart, which decreases cardiac output and cardiac dysrhythmias occur.
CONS: use has
decreased over years, can hold large
volumes of water if there is a water leak, fibers can lodge in the
lungs, eyes, and skin if protective gear isn't used, very high energy use to create, some manufacturers add 5 % phenolformaldehyde.