It is interesting to see that the force of only 6 or 7 people pushing in the same direction can cause up to 1,000 pounds of force—enough to break brick walls.During a deadly stampede( 奔逃 ) , people can even die standing up.People die when pressure is put to their bodies in a front to back direction , causing them not to be able to breathe. If you are in a crowd , the first and most important thing is to make yourself familiar with your surroundings and find different exits .No matter where you are , make sure you always know how to get out. Make yourself aware of the type of the ground you are standing on , and know that in a crowd of moving people wet ground can cause you to fall. When in danger , a few seconds can make a difference , giving you the possibility of making use of your escaping route.Always stay closer to the escape route.If you find yourself in the middle of a moving crowd , do not fight against the pressure , do not stand still or sit down , because you can easily get trampled( 踩踏 ) . Instead , move in the same direction of the crowd ; make use of any space that may open up to move sideways to the crowd movement where the flow is weaker. Keep your hands up by your chest , like a boxer—it gives you movement and protects your chest.If you fall , get up quickly.If you can ’ t get up because you are injured , get someone to pull you up.If you have kids , lift them up. If you fall and cannot get up , keep moving in the same direction of the crowd , or if that is not possible , then cover your head with your arms ; do not lie on your stomach or back.