When ur smoking and breathing?!


Question: When ur smoking and breathing.?
i heard that when u breathe out u are blowing out air that u have breathed in a while ago
so how come when u smoke u breathe out smoke
and when u stop smoking u dont still breathe out smokeHealth Question & Answer


Answers:
You are misinformed.
You breathe in air, fill your lungs with it and push it back out along with carbon dioxide eliminated from your body.
The lungs pull the oxygen out and distribute it to your body, creating
oxygenated hemoglobin or blood rich in oxygen. The blood comes back to the heart without the oxygen, and gets sent back to the lungs to pick up more oxygen. OK.?Health Question & Answer

That's not really true. You breath in air. Some of that air, oxygen, will transfer into the blood stream. Carbon Dioxide (CO2) will leave the bloodstream and go in to the lungs. Then you breath out that air with the CO2 in it.

Fact: We breath in about 21% oxygen and breath out about 17% oxygen. So some of the oxygen we breath in comes right back out.
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