Fun Facts
The Respiratory system has many fun facts that go along with it hears what. When you yawn you are sleepy and the lungs are not taking in enough oxygen. When you sneeze it's because it is trying to get ride of mucus or things like dust or dirt. When you hiccup it's because something is being irritated, or you may have ate to fast. Hairs in the nose help to clean the air we breathe as well as warming it. The breathing rate is faster in children and women than in men.