My grandfather has an oxygen tank which he uses sometimes when he feels faint, so I decided to give it a go. I was told by my chem teacher that one would feel very high when inhaling pure oxygen but to my surprise after inhaling it for a couple of minutes I felt very light headed and almost dizzy. I would think that since I was inhaling pure oxygen I would feel like at a state of higher consciousness or bodily and mental processes would speed up. I think my heart sped up a little, but I didn't feel more energetic.
Has anyone else here experienced this or can give any input on oxygen inhalation?
Stefano.
update: 20 minutes later I feel kinda sleepy.