there's another way to do this that doesn't involve blocking off blood to the brain.. just sit in a chair and put your head between your legs and breath deep in and out about 10 times or so.. on your last breath, take it in really deep, sit up real fast and hold it.. try to push the air out but don't let any out.. you'll wake up a bit later with the same effect.. and your still getting your much needed blood.. enjoy
i've done this once or twice accidently, from getting up really fast, although it probably doesn't last as long as the other methods. The best is when you pass out right after standing, then wake as you are halfway to the floor. Could probly do it in controlled situations, just make sure there is nothing to hit you head on, and maybe some cushions around ya.
the reason you need blood is IT CARRIES OXYGEN the symptom is the problem.... my god people are stupid.....
I did that once, before ever trying drugs. It was the period of time where I wanted to, and I did stupid things like whippits and, well, making myself pass out. Long story short, I woke up with a sharp pain in the ass and my two friends laughing really hard.
Yeah of all the "easy highs" out there this is perhaps the -worst- If you need an easy quick trip, drink a bottle of DXM-only cough medicine. Not very good for you either, but it's a -real- trip, and it doesn't guarantee brain damage on the first try.