People try to lose weight and get fit with the expert help of a personal dietician, fitness instructor and psychologist. As an added incentive, the participants' houses and fridges are fitted with webcams to catch them out if they slip back into bad habits.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2008-01-10 | 60 min |
| Season 1 | Episode 2 | Episode 2 | 2008-01-17 | 60 min |
| Season 1 | Episode 3 | Episode 3 | 2008-01-24 | 60 min |
| Season 1 | Episode 4 | Episode 4 | 2008-01-31 | 60 min |
| Season 1 | Episode 5 | Episode 5 | 2008-02-07 | 60 min |
| Season 1 | Episode 6 | Episode 6 | 2008-02-14 | 60 min |
| Season 1 | Episode 7 | Episode 7 | 2008-02-21 | 60 min |
| Season 1 | Episode 8 | Episode 8 | 2008-02-28 | 60 min |
| Season 2 | Episode 1 | Episode 1 | 2009-01-08 | 60 min |
| Season 2 | Episode 2 | Episode 2 | 2009-01-15 | 60 min |
| Season 2 | Episode 3 | Episode 3 | 2009-01-22 | 60 min |
| Season 2 | Episode 4 | Episode 4 | 2009-01-29 | 60 min |
| Season 2 | Episode 5 | Episode 5 | 2009-02-05 | 60 min |
| Season 2 | Episode 6 | Episode 6 | 2009-02-12 | 60 min |
| Season 2 | Episode 7 | Episode 7 | 2009-02-19 | 60 min |
| Season 2 | Episode 8 | Episode 8 | 2009-02-26 | 60 min |
| Season 3 | Episode 1 | Episode 1 | 2010-01-13 | 60 min |
| Season 3 | Episode 2 | Episode 2 | 2010-01-20 | 60 min |
| Season 3 | Episode 3 | Episode 3 | 2010-01-27 | 60 min |
| Season 3 | Episode 4 | Episode 4 | 2010-02-03 | 60 min |
| Season 3 | Episode 5 | Episode 5 | 2010-02-10 | 60 min |
| Season 3 | Episode 6 | Episode 6 | 2010-02-17 | 60 min |
| Season 3 | Episode 7 | Episode 7 | 2010-02-24 | 60 min |
| Season 3 | Episode 8 | Episode 8 | 2010-03-03 | 60 min |
| Season 4 | Episode 1 | Episode 1 | 2011-01-05 | 60 min |
| Season 4 | Episode 2 | Episode 2 | 2011-01-12 | 60 min |
| Season 4 | Episode 3 | Episode 3 | 2011-01-19 | 60 min |
| Season 4 | Episode 4 | Episode 4 | 2011-01-26 | 60 min |
| Season 4 | Episode 5 | Episode 5 | 2011-02-02 | 60 min |
| Season 4 | Episode 6 | Episode 6 | 2011-02-09 | 60 min |
| Season 4 | Episode 7 | Episode 7 | 2011-02-16 | 60 min |
| Season 4 | Episode 8 | Episode 8 | 2011-02-23 | 60 min |
| Season 5 | Episode 1 | Episode 1 | 2012-01-04 | 60 min |
| Season 5 | Episode 2 | Episode 2 | 2012-01-11 | 60 min |
| Season 5 | Episode 3 | Episode 3 | 2012-01-18 | 60 min |
| Season 5 | Episode 4 | Episode 4 | 2012-01-25 | 60 min |
| Season 5 | Episode 5 | Episode 5 | 2012-02-01 | 60 min |
| Season 5 | Episode 6 | Episode 6 | 2012-02-08 | 60 min |
| Season 5 | Episode 7 | Episode 7 | 2012-02-15 | 60 min |
| Season 5 | Episode 8 | Episode 8 | 2012-02-22 | 60 min |
| Season 6 | Episode 1 | Episode 1 | 2013-01-09 | 60 min |
| Season 6 | Episode 2 | Episode 2 | 2013-01-16 | 60 min |
| Season 6 | Episode 3 | Episode 3 | 2013-01-23 | 60 min |
| Season 6 | Episode 4 | Episode 4 | 2013-01-30 | 60 min |
| Season 6 | Episode 5 | Episode 5 | 2013-02-06 | 60 min |
| Season 6 | Episode 6 | Episode 6 | 2013-02-13 | 60 min |
| Season 6 | Episode 7 | Episode 7 | 2013-02-20 | 60 min |
| Season 6 | Episode 8 | Episode 8 | 2013-02-27 | 60 min |
| Season 7 | Episode 1 | Episode 1 | 2014-01-07 | 60 min |
| Season 7 | Episode 2 | Episode 2 | 2014-01-08 | 60 min |
| Season 7 | Episode 3 | Episode 3 | 2014-01-14 | 60 min |
| Season 7 | Episode 4 | Episode 4 | 2014-01-15 | 60 min |
| Season 7 | Episode 5 | Episode 5 | 2014-01-21 | 60 min |
| Season 7 | Episode 6 | Episode 6 | 2014-01-22 | 60 min |
| Season 7 | Episode 7 | Episode 7 | 2014-01-28 | 60 min |
| Season 7 | Episode 8 | Episode 8 | 2014-01-29 | 60 min |
| Season 8 | Episode 1 | Episode 1 | 2015-01-07 | 60 min |
| Season 8 | Episode 2 | Episode 2 | 2015-01-08 | 60 min |
| Season 8 | Episode 3 | Episode 3 | 2015-01-14 | 60 min |
| Season 8 | Episode 4 | Episode 4 | 2015-01-15 | 60 min |
| Season 8 | Episode 5 | Episode 5 | 2015-01-21 | 60 min |
| Season 8 | Episode 6 | Episode 6 | 2015-01-22 | 60 min |
| Season 8 | Episode 7 | Episode 7 | 2015-01-28 | 60 min |
| Season 8 | Episode 8 | Episode 8 | 2015-01-29 | 60 min |
| Season 8 | Episode 9 | Episode 9 | 2015-02-04 | 60 min |
| Season 8 | Episode 10 | Episode 10 | 2015-02-05 | 60 min |
| Season 8 | Episode 11 | Episode 11 | 2015-02-11 | 60 min |
| Season 8 | Episode 12 | Episode 12 | 2015-02-12 | 60 min |
| Season 8 | Episode 13 | Episode 13 | 2015-02-18 | 60 min |
| Season 8 | Episode 14 | Episode 14 | 2015-02-19 | 60 min |
| Season 8 | Episode 15 | Episode 15 | 2015-02-25 | 60 min |
| Season 8 | Episode 16 | Episode 16 | 2015-02-26 | 60 min |
| Season 9 | Episode 1 | Episode 1 | 2016-01-06 | 60 min |
| Season 9 | Episode 2 | Episode 2 | 2016-01-07 | 60 min |
| Season 9 | Episode 3 | Episode 3 | 2016-01-13 | 60 min |
| Season 9 | Episode 4 | Episode 4 | 2016-01-14 | 60 min |
| Season 9 | Episode 5 | Episode 5 | 2016-01-20 | 60 min |
| Season 9 | Episode 6 | Episode 6 | 2016-01-21 | 60 min |
| Season 9 | Episode 7 | Episode 7 | 2016-01-27 | 60 min |
| Season 9 | Episode 8 | Episode 8 | 2016-01-28 | 60 min |
| Season 9 | Episode 9 | Episode 9 | 2016-02-03 | 60 min |
| Season 9 | Episode 10 | Episode 10 | 2016-02-04 | 60 min |
| Season 9 | Episode 11 | Episode 11 | 2016-02-10 | 60 min |
| Season 9 | Episode 12 | Episode 12 | 2016-02-11 | 60 min |
| Season 9 | Episode 13 | Episode 13 | 2016-02-17 | 60 min |
| Season 9 | Episode 14 | Episode 14 | 2016-02-18 | 60 min |
| Season 9 | Episode 15 | Episode 15 | 2016-02-24 | 60 min |
| Season 9 | Episode 16 | Episode 16 | 2016-02-25 | 60 min |
| Season 9 | Episode 17 | Episode 17 | 2016-02-25 | 60 min |
| Season 10 | Episode 1 | Episode 1 | 2017-01-04 | 60 min |
| Season 10 | Episode 2 | Episode 2 | 2017-01-05 | 60 min |
| Season 10 | Episode 3 | Episode 3 | 2017-01-11 | 60 min |
| Season 10 | Episode 4 | Episode 4 | 2017-01-12 | 60 min |
| Season 10 | Episode 5 | Episode 5 | 2017-01-18 | 60 min |
| Season 10 | Episode 6 | Episode 6 | 2017-01-19 | 60 min |
| Season 10 | Episode 7 | Episode 7 | 2017-01-25 | 60 min |
| Season 10 | Episode 8 | Episode 8 | 2017-01-26 | 60 min |
| Season 10 | Episode 9 | Episode 9 | 2017-02-01 | 60 min |
| Season 10 | Episode 10 | Episode 10 | 2017-02-02 | 60 min |
| Season 10 | Episode 11 | Episode 11 | 2017-02-08 | 60 min |
| Season 10 | Episode 12 | Episode 12 | 2017-02-09 | 60 min |
| Season 10 | Episode 13 | Episode 13 | 2017-02-15 | 60 min |
| Season 10 | Episode 14 | Episode 14 | 2017-02-16 | 60 min |
| Season 10 | Episode 15 | Episode 15 | 2017-02-22 | 60 min |
| Season 10 | Episode 16 | Episode 16 | 2017-02-23 | 60 min |
| Season 11 | Episode 1 | Episode 1 | 2018-01-09 | 60 min |
| Season 11 | Episode 2 | Episode 2 | 2018-01-10 | 60 min |
| Season 11 | Episode 3 | Episode 3 | 2018-01-16 | 60 min |
| Season 11 | Episode 4 | Episode 4 | 2018-01-17 | 60 min |
| Season 11 | Episode 5 | Episode 5 | 2018-01-23 | 60 min |
| Season 11 | Episode 6 | Episode 6 | 2018-01-24 | 60 min |
| Season 11 | Episode 7 | Episode 7 | 2018-01-30 | 60 min |
| Season 11 | Episode 8 | Episode 8 | 2018-01-31 | 60 min |
| Season 11 | Episode 9 | Episode 9 | 2018-02-06 | 60 min |
| Season 11 | Episode 10 | Episode 10 | 2018-02-07 | 60 min |
| Season 11 | Episode 11 | Episode 11 | 2018-02-13 | 60 min |
| Season 11 | Episode 12 | Episode 12 | 2018-02-14 | 60 min |
| Season 11 | Episode 13 | Episode 13 | 2018-02-21 | 60 min |
| Season 11 | Episode 14 | Episode 14 | 2018-02-28 | 60 min |
| Season 11 | Episode 15 | Episode 15 | 2018-02-28 | 60 min |
| Season 12 | Episode 1 | Episode 1 | 2019-01-09 | 60 min |
| Season 12 | Episode 2 | Episode 2 | 2019-01-16 | 60 min |
| Season 12 | Episode 3 | Episode 3 | 2019-01-23 | 60 min |
| Season 12 | Episode 4 | Episode 4 | 2019-01-30 | 60 min |
| Season 12 | Episode 5 | Episode 5 | 2019-02-06 | 60 min |
| Season 12 | Episode 6 | Episode 6 | 2019-02-13 | 60 min |
| Season 12 | Episode 7 | Episode 7 | 2019-02-20 | 60 min |
| Season 12 | Episode 8 | Episode 8 | 2019-02-27 | 60 min |
| Season 13 | Episode 1 | Episode 1 | 2020-01-12 | 60 min |
| Season 13 | Episode 2 | Episode 2 | 2020-01-19 | 60 min |
| Season 13 | Episode 3 | Episode 3 | 2020-01-26 | 60 min |
| Season 13 | Episode 4 | Episode 4 | 2020-02-02 | 60 min |
| Season 13 | Episode 5 | Episode 5 | 2020-02-09 | 60 min |
| Season 13 | Episode 6 | Episode 6 | 2020-02-16 | 60 min |
| Season 13 | Episode 7 | Episode 7 | 2020-02-23 | 60 min |
| Season 14 | Episode 1 | Episode 1 | 2021-01-06 | 60 min |
| Season 14 | Episode 2 | Episode 2 | 2021-01-13 | 60 min |
| Season 14 | Episode 3 | Episode 3 | 2021-01-20 | 60 min |
| Season 14 | Episode 4 | Episode 4 | 2021-01-27 | 60 min |
| Season 14 | Episode 5 | Episode 5 | 2021-02-03 | 60 min |
| Season 14 | Episode 6 | Episode 6 | 2021-02-10 | 60 min |
| Season 14 | Episode 7 | Episode 7 | 2021-02-17 | 60 min |
| Season 14 | Episode 8 | Episode 8 | 2021-02-24 | 60 min |
| Season 15 | Episode 1 | Episode 1 | 2022-01-05 | 60 min |
| Season 15 | Episode 2 | Episode 2 | 2022-01-12 | 60 min |
| Season 15 | Episode 3 | Episode 3 | 2022-01-19 | 60 min |
| Season 15 | Episode 4 | Episode 4 | 2022-01-26 | 60 min |
| Season 15 | Episode 5 | Episode 5 | 2022-02-02 | 60 min |
| Season 15 | Episode 6 | Episode 6 | 2022-02-09 | 60 min |
| Season 15 | Episode 7 | Episode 7 | 2022-02-16 | 60 min |
| Season 15 | Episode 8 | Episode 8 | 2022-02-23 | 60 min |
| Season 17 | Episode 1 | Episode 1 | 2024-01-03 | 60 min |
| Season 17 | Episode 2 | Episode 2 | 2024-01-10 | 60 min |
| Season 17 | Episode 3 | Episode 3 | 2024-01-17 | 60 min |
| Season 17 | Episode 4 | Episode 4 | 2024-01-24 | 60 min |
| Season 17 | Episode 5 | Episode 5 | 2024-01-31 | 60 min |
| Season 17 | Episode 6 | Episode 6 | 2024-02-08 | 60 min |
| Season 17 | Episode 7 | Episode 7 | 2024-02-15 | 60 min |
| Season 17 | Episode 8 | Episode 8 | 2024-02-22 | 60 min |
