Comment by viggity

Do not do this. Was CTO of Healthcare company that focuses on heart failure. In the course of my work I learned that if you're in the hospital, they only give you just enough to keep your SpO2 in the desired range. If they give you too much oxygen, you can get oxygen toxicity. Your body will also get used to trying less hard for air, so when you go off your SpO2 drops dramatically. You have to slowly titrate off. This isn't a thing you want to fuck with.