CSB#4 - Science in Born to Run

Definitions
   Rarámuri - Also known as Tarahumara, they are literally "The Running People" when translated from spanish.
   Ultra-Runners - Runners who run 50 miles or more in a single race.

Summary
   A true story, Christopher McDougall begins by asking a simple question - "Why does my foot hurt?" The answer will take him on a journey that will show him the incredible Rarámuri as well as teach him incredible secrets about running. The Tarahumara are the sole practicioners of a long lost art. For centuries, they have honed techniques that will allow them to reel off hundreds of miles without rest. With the help of Caballo Blanco, McDougall was able to uncover the secrets of the Tarahumara as well as witness a fifty-mile race between the greatest of all ultra-runners. Born to Run takes you on a wild journey that will make you realize that "you, indeed all of us, were born to run."

Discussion

http://borntorun.org/

  Born to Run, although describing one of the most amazing races ever told, shows a tremendous amount of science in explaining how humans were indeed Born to Run. It shows that when humankind evolved and moved on to two feet, they lost speed, due to drag, as well as strength. Thus, the question became, as all animals evolved to become better, what was their to gain from moving on to two feet? The story is inspiring because it shows how our entire race evolved to run, yet almost no-one does so today, as well as the fact that bare-foot running is far bettI started reading the book mainly because of boredom and my dad shoving it towards me, however I was enthralled by page five. All the ideas portrayed in the book are incredibly amazing as well as being completely true.

Questions
  If bare-foot running is as beneficial to your feet as it is, then why are sports companies able to make so much money?
  If humans evolved to run, yet now are usually relaxing, will and if so when will we evolve again to get rid of our useless running ability?