Unfortunately, it is very difficult to prevent these injuries from happening without completely sheltering our children. The use of helmets during a sport like football is obvious, but activities such as bike riding, skateboarding, skiing, sledding, and anything else where falls can occur should always be used. Wearing a bike helmet for example reduces head and brain injury by 85% so even if a child is going on a short bike ride to a friends house, you should make sure they are wearing a helmet . While helmets provide protection against certain types of head injuries, concussions can still occur. Helmets cannot protect against those indirect forces such as rapid acceleration or deceleration. Think of yourself driving a fully armored car; If you drive into a wall that rapidly stops your car from 60 to 0, perhaps the car would suffer some minor damage (due to the armor), but the contents of the car most certainly would be damaged. Even if your head is protected, the contents of your head (the brain) can still be injured.