The series involves contestants who are overweight to varying degrees participating in a contest to lose the most percentage of weight, with teams and contestants voting out each other. Unlike the American version, weight loss is measured in tenths of kilograms instead of pounds. Personal trainers Michelle Bridges, Shannan Ponton, Steve Willis and Tiffiny Hall are responsible for training the contestants and helping them to lose weight.
April 2011
February 2006 - April 2006
February 2007 - April 2007
February 2008 - May 2008
February 2009 - April 2009
January 2010 - April 2010
January 2011 - May 2011
January 2012 - May 2012
March 2013 - May 2013
January 2014 - April 2014
September 2015 - December 2015
March 2017 - May 2017