Why is hyperventillation chancy?

I've used hyperventillation many times earlier, but nothing happen to me. Then I hear it is dangerous. I wonder why.Why is hyperventillation chancy?
Your body must hold a certain stratum of carbon monoxide to stimulate the respiratory center in the brain surrounded by order protract a respiratory function.That's controlled by the "autonomic" nervous system.When you hyperventilate you blow adjectives your CO2 out and the the O2 blood levels walk way up,and it act like a toxin and decrease the ability to own a normal breathing cycle,and you breathe heavily and pant very shallow breaths.In charge to stop that cycle,you must breathe into a paper daypack for several minutes,breathing in the CO2 needed to catch the brain's respiratory center back contained by its natural rhythm.Take exactness SW RNP
if you are referring to the use if it in diving, it is because of the possible disorienting effect of elevated oxygen level. You realize that people slip away out from hyperventilation right? There is a reason for that. It is the body's defense gears used to restore breathing to normal level. Passing out when diving is usually a bad item.
Sharon got it pretty much right, save for it's carbon dioxide (one carbon molecule, two oxygen molecules) not monoxide
:-)
I can also point out that when swimmers hyperventilate it is to lower the carbon dioxide levels contained by the blood. When you hold your breath, it isn't the lack of oxygen recitation you that you need to breathe again, it is the INCREASING carbon dioxide level in the blood. Hence, hyperventilation increases the time between holding your breath and your brain's respiratory nub telling you to pinch another breath.
you cant get adequate oxygen to your body to allow gas exchange to occur. i hyperventilate when i cry and if it last long enough i commence to feel dizzy.

other