Remember these facts if you ever come into contact with someone who has a concussion. a concussion is an injury to the brain. the most common way to get a concussion is to hit your head. even a simple fall could result in a concussion if a person hits his or her head on the ground. if you think someone is suffering from a concussion, the most important thing is to make sure he or she stays . if someone passes out for more than a minute, you should take him or her to the emergency room. also try yelling out the person's name until he or she is able to you.