Each year, about 150,000 children are treated in emergency rooms for head injuries that occurred while riding their bikes. Many bike-related injuries could be avoided if riders wore their helmets properly. Wearing a bike helmet reduces the risk of brain injury by as much as 88 percent and reduces the risk of injury to the face by 65 percent. That is why many state laws say that bicyclists under the age of 14 are required to wear approved bicycle helmets when they ride their bicycles. If your friends don’t wear helmets when you bicycle together, teach them by your wise example. In the United States, bicycle helmets save one life every day and prevent one head injury from happening every four minutes.