Hiccup's slave room
But this air had now been inside of the other slaves' lungs and therefore had only little oxygen left.
The Limits
Blood oxygen levels average 89% during non-apnea, non-hyponea breathing. the subject may need additional oxygen to assist breathing.
Remembering Winter Part 2
"you are... safe, your body is taking the oxygen here even better then the oxygen in your reality. however." she said, "how ever?" i asked, shaking gently. "your metabolism is now faster so you will need more food.
Birthday Balloons 3
"it's exciting the oxygen molecules in your body and making them multiply.
The Zombie Apoc-Fur-Lypse, Group 5, Scene 5b
"then... how does the oxygen circulate through your body?" he asked quietly.
Against All Odds: Part 30 - From The Ashes
Alexei looked down to his husky just as the little polcian medics finished up administering him his own dose of oxygen. "and again, you didn't do this."
Fetor of the Seas
These multiple attacks had surely weaken him, but his health didn't really matter now he was running out of oxygen.
Into The Stars. Chapter Six.
“disable the gravity; show a few screens that the oxygen was being depleted… i was joking! i didn't actually turn off the oxygen." sphinx just laughed. “oh, come on. it was funny!" samson didn't even crack a smile.
Elements of Control
If she could make herself cum fast enough, hard enough to live up to her end of the bargain before her lungs were totally devoid of any oxygen with which to provide her body.
Swim at the Castle
Small cohorts of precious escaping oxygen left from the corners of their mouths or from their nostrils.
Rip Tide
As if that on its own was not surprising, the creature also fed me some oxygen from his capacious lungs. i also felt a sizable erection from the obviously male and aroused ocra.
Breath Play
His vision was becoming fuzzier now, and he could tell he was moaning loudly from the need for oxygen.