When human being had learned how to stand on two feet about four million years ago, same time they had gotten the critical difference from all other animals. Standing on two feet allowed human to develop their brain, culture and rapid progress. However this evolution threatens the environment of the earth now and human themselves even suffer from standing on two feet.
Human feet bear average five to six hundreds tons of weight everyday.
The feet that are the contact point with the earth endure this severe condition. In this issue, we study the mechanism of two feet and the comfortable way to contact the earth. He was born in 1926 in Tokyo. He graduated from the Jikei Medical University. After learned at the California University Los Angels School of Medical Postgraduate, he worked at the attached hospital as an intern.