Suomynone mentioned that the R&F in the book is only footwork and nothing to do with body elevation, this is unfortunate as what everyone sees is not the feet but the elevation and will then try to copy this elevation using the book as an example. We do not need an explanation for R&F of the feet we do it correctly any time we walk and run. It would make more sence if the book was to describe the R&F of the body
