Expert Safety Tips, For Protecting Yourself , in a Crowd Crush.br On October 29, at least 156 people died in a crowd crush in South Korea as thousands of people gathered in Seoul's popular Itaewon neighborhood. .br The Independent reports that crowd crushes br occur when density hits a critical threshold br of about six people per square meter.br When this occurs, people are br squeezed to such an extent that they br can no longer fill their lungs with air.br Here is some expert advice br on what to do in such a situation.br Research the event br and the venue beforehand, Once inside, locate and mentallybr note the nearest exit options. .br Stay aware, stay calm, As soon as a crush situation begins, br find your escape route andbr leave quickly and calmly.br Stay aware, stay calm, As soon as a crush situation begins, br find your escape route andbr leave quickly and calmly.br Don't scream, Save oxygen by controlling your br breathing and remaining calm.br Assume a boxer's stance, Fold your arms in front of your br chest and keep a firm footing. .br This can provide a few centimeters br of space for the lungs to breathe.br Don't fight the crowd, According to the CDC, let yourself be carried by br the force of the crowd while maintaining balance.