|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||1 days ago||37.23||$26.45||You save $10.78|
|Amazon US||4 days ago||31.57||$26.45||You save $5.12|
|Book Depository US||yesterday||30.67||$26.45||You save $4.22|
Charlie Reid B.S., CSCS, CPT, is a personal fitness coach, fitness writer, and business consultant based out of San Francisco, CA. His passion lies in helping others realize their physical potential through training smarter and learning to move their bodies in the most efficient way possible. He believes that physical health and well-being can be distilled from learning to master one's own body through guided discovery and consistent practice. Besides running and training barefoot, Charlie also shares a strong passion for music, and is a session bassist for local artists and touring bands.Josh Leeger M.S., NASM-CPT, has a Master's degree in Kinesiology (human movement science) from San Francisco State University. He has been a certified personal trainer since 2001, and has coached and trained men and women from every age group and activity level, from couch potatoes to competitive athletes. His interests are in human evolutionary behavior and physical activity.