What would it be like to recover from oxygen deprivation
I've done some research on oxygen deprivation, but I haven't been able to find much on what it would be like to wake up from it. If somebody were to be deprived of oxygen for a long enough time to pass out, but just before they received any serious or life-altering brain damage, what would they experience when they wake up? i.e what kinds of pain, confusion, or other symptoms would they have? Additionally, would they wake up as soon as they were exposed to oxygen, or is it feasible it would take several minutes or longer for them to become conscious? Thanks!