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ANSWER: For Each Minute Your Brain Does Not Receive Oxygen, Your Chances Of Living Gets Reduced So A persons brain can live for about 7 Minutes without oxygen Edit Share to:
your brain cells will start to die off after 4min without oxygen. i heard 2 in a half was the record. at 3 min you pass out. a person can stay under water for at least 30 sec. but most likely if you breath while you are under water the water will reach your lungs and then you have at least 10 minutes before you pass out. unless your criss angel!! 4 min. and 30 sec.!!