Psychological disorders which may be confused with an eating disorder, or be co-morbid with one: 1  Emetophobia is an anxiety disorder characterized by an intense fear of vomiting. A person so afflicted may develop rigorous standards of food hygiene, such as not touching food with their hands.
Having a good lung capacity is important because you'll need it when it comes to sports and running.
The respiratory system is important to the body because it will send oxygen to the blood cells through the lungs and the circulatory system will send the oxygen rich blood cells to the rest of the body to keep the living cells alive.