Pps. If you hyperventilate then hold your breath your body doesn't realise when you need more air (because you've flushed out all the co2 from your system, and your body measures co2 not o2 content when working out how much o2 you have available). So if you hyperventilate then hold your breath you can end up falling unconcious... Do people hyperventilate when they faint?
no subject
Pps. If you hyperventilate then hold your breath your body doesn't realise when you need more air (because you've flushed out all the co2 from your system, and your body measures co2 not o2 content when working out how much o2 you have available). So if you hyperventilate then hold your breath you can end up falling unconcious... Do people hyperventilate when they faint?