Its peak is not totally straight, has a slight curvature which prevents break, getting further blow to transform every thrust.

His technique keeps hammering the head and bill perfectly aligned, so that the spongy connective tissue that separates the peak of the skull to absorb the force of impacts.

His work as a lingual muscle tension helps reduce the effect of the coup.

Your brain completely fills the cranial cavity, with no fluid. And so it is impossible to swing that would cause a dizzy spell. Moreover, the peak shaft passes through the skull below the brain, so that the impact force does not pass through the brain, but passes below it.