Wearing a helmet while participating in activities similar to bicycle riding or motorcycle riding can severely lessen the chance of suffering a severe brain injury. All too frequently, people taking part in these activities are critically injured because they chose not to wear a helmet. Helmets are significant protection devices in a myriad of jobs, actions, and pastimes throughout the world. In almost all instances, the wearers of helmets do so to defend their cranium and brain throughout the course of their work, sport, or play.