(bouncing here and there and everywhere)
They drink Gummi Berry Juice which makes them bounce to get out of trouble.
Every cell in your body uses oxygen in your blood to transport protiens. Without it the cells in your body aren't getting fed. You turn blue because the oxygen in your blood is what gives your red blood cells or eurocytes the red color. When you arent getting oxygen from your lungs you aren't transporting "food" to your brain and organs. Your body can go several minutes without oxygen and will exhale reflexively when it needs too. It is very hard to hold your breath long enough on purpose to do any damage, but after about five minutes you start to do damage to brain tissue due to lack of oxygen, and you cannot grow new brain cells. This leads to brain damage, or in serious casses, death.