why does people breathe in a bag when they are about to faint?

Answer 1

I seem to remember this from a first aid class I once took. The body requires a certain amount of CO2 to regulate breathing, when you are hyperventilating you are lowering the amount of CO2 to below this level the bag helps to raise that level. Otherwise the body passes out and basically resets it self.

Answer 2

Fainting can happen when not enough oxygen flows through your blood and into your brain. Breathing in the bag regulates your breathing (as you know you need to fill the bag with your breath and then empty the bag)- it forces you to slow down (and does not allow you to hyperventilate.) allowing you to get the oxygen levels back under control

Answer 3

because it feels as if you cant breathe and watching the bag inflate and deflate can help a person regulate their air. I passed out having a seizure once and I literally could not remember how to make my body breathe-it felt like I forgot how-then I passed out and my body started breathing again on it own

Answer 4

This method works because:

a) You are slowing down your breathing. This will build up the carbon dioxide level in your blood.

b) As the problem in hyperventilation in that you are breathing in too much oxygen while breathing out too much carbon dioxide, using the paper bag helps, as instead of losing carbon dioxide when you breathe out, you simply hold it in the bag and take it straight back in as you take your next breath in. This stops you breathing out too much carbon dioxide.

Answer 5

the bag may provide more oxygen . it may help the person to feel relaxed.

Answer 6

first, that happens because:
-- y0u have to0 much 0xygen
--------or--------
-- to0 much carb0n di0xide.

y0u breathe in a bag t0 reduce excessive air and t0 c0ntr0l the am0unt 0f air and its circulation.

Answer 7

beats me.......