Because it helps upper body torsio due to the excess radiation energy that is processed through osmosis
A coronal plane through the head:
Answer: A coronal plane through the head could pass through both ears. A coronal plane or frontal plane is a vertical plane that divides the body into front (anterior or ventral) and back (posterior or dorsal) sections.
I hope it helps, Regards.
6 ft 6 inches probably I don't know.