On this show, obese contestants are challenged to "face their food demons", let go of their excess weight, and move on to better lives. / Based on the American , the Australian format differs, airing several episodes per week, thus bringing viewers along to witness the detailed trials and tribulations of each contestant's journey. / The contestant who loses the greatest percentage body weight by the final weigh-in, is crowned "The Biggest Loser" and wins a cash prize. /