This personal anecdote doesn't really add to this conversation in a constructive way. But, for sake of argument, it assumes a few things: 1) That your lungs a

This personal anecdote doesn't really add to this conversation in a constructive way. But, for sake of argument, it assumes a few things: 1) That your lungs are healthy enough to hold your breath for >= 1 minute (not all are) 2) You actually have the opportunity to breath in a lungful of oxygen-rich air (depending on the situation/timing, this might not be the case) 3) You have your wits about you while a very stressful situation unfolds around you (let's argue that you, personally, are cool and collected under pressure - this; however, is not universally true for all other passengers)