The human head is a very important part of the human body, the human mind, control of movement and the center of life are all concentrated in the head. Therefore, the head must be well protected and cannot fall anywhere. Relatively speaking, the forehead is the front part of the skull, with a certain strength and thickness, can have a certain impact resistance. People’s bilateral temporal area, also commonly known as the temple area, first of all, is the junction of the bone plate, is a lot of bone junction, and secondly, the bone itself is relatively thin, and there are important brain arteries through the lower part of the temple by the impact, it is very easy to fracture as well as the blood supply arteries of the brain rupture, there are serious consequences. People’s occiput and neck is the center of human life, the place if the impact or damage, if caused by the center of life damage, light will appear paralyzed, heavy directly life-threatening. So the head to where can not fall, relatively speaking, the forehead has a certain strength and impact resistance.