|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||3 days ago||47.51||$22.48||You save $25.03|
|Amazon US||1 days ago||34.24||$22.48||You save $11.76|
|Book Depository US||yesterday||24.93||$22.48||You save $2.45|
Glenn Gaessar Phd is a professor of exercise physiology and faculty advisor tot he Cardiovascular health and fitness programme at the university of Virginia, USA. He is the author of three books.