My suitemates showed me a wonderful and glorious thing tonight. It seems that if you cross your arms across your chest and take about 15 quick deep breaths and then have someone push on your arms while standing against a wall you will momentarily pass out. We pretty much figure that it invovles momentarily depriving your brain of oxygen. What we aren’t sure is exactly how the short deep breaths or pushing against the arms achieve this. If a doper could enlighten us I would greatly appreciate it.
grr I searched before I posted it but on my second search I found this thread. It comes down to the fact that hyperventilating causes oxygen to bond to hemoglobin better which means less oxygen for tissues (oxygen won’t leave hemoglobin) and the vagal reflex which slows the heart rate depriving the brain further of oxygen.
Doesn’t sound like something you should be fooling around with. Anything that interferes with respiration or heart rate could potentially lead to death.