What is Strength For?

For most of the past two million years, men and women needed strength for basically one reason: to not die. Bast as horse, machine and computer power slowly replaced man power, the meaning of strength began to evolve. Now being strong has more cultural and social implications that ever. The connection between mind and body, and body and self-esteem, is complicated and intimate in ways our forebears couldn't imagine. Doctors and scientists are learning more about the health and longevity bene...