Oxygen: a mind-altering substance?

[Kuhnada29]

I know deep breathing is supposed to relax you and decrease stress and anxiety, but have you ever like gotten euphoric effects from deep breathing, even mind-altering effects? I did, I will explain now. This happened to me two times, one time i was on the way to work and I decided to start breathing deeply, and the weirdest thing happened, I got some euphoria, which automatically put a smile on my face and filled me with a bit of optimism, not only that....soon after, I started feeling a vibration......like there was a vibration/buzzing in my mouth and a bigger buzzing/vibration in my head which felt the same as a WILD vibration that felt good. It forced me to chuckle( i couldn't help it ), and I know the guy i was in the car with was like "wtf is wrong with him". Then AGAIN today, I decided to try something else. Breathe hard, deep, and relatively fast for about 10 to 15 seconds until i got that lightheaded feeling and held my breathe....what happened next is hard to explain. LIke what happened was I was basically cut off from external stimuli for a period of time, and lost in bliss/euphoria, and optimism. Some people might think this is dangerous but I don't think so...it's too natural, and your NOT cutting your oxygen levels off, your simply holding your breathe ( same thing you do while swimming ), and causing a surge in oxygen levels. Oxygen, natures natural pain-killer/anesthesia I have to admit the euphoria and optimism I got from doing the deep/fast/breathing thing was stronger than a low-dose percocet high but shorter. The CRAZY part about all of this is, when i first did it, I would just kind of black-out into unconsciousness, but the more I do it it's like I'm starting to be able to see SUBTLE images/positive images. But it was subtle as in LIKE A DREAM OR SOMETHING. This leads me to believe that this breathing thing active Chi/Ki/consciousness and introverts you or lets the subconscious rise. I don't know, other people should try this breathing technique and see what happens to you. Breathe hard, deep, and fast until you feel and light-headedness and hold your breathe